/*
---

name: Core

description: The core of MooTools, contains all the base functions and the Native and Hash implementations. Required by all the other scripts.

license: MIT-style license.

copyright: Copyright (c) 2006-2008 [Valerio Proietti](http://mad4milk.net/).

authors: The MooTools production team (http://mootools.net/developers/)

inspiration:
- Class implementation inspired by [Base.js](http://dean.edwards.name/weblog/2006/03/base/) Copyright (c) 2006 Dean Edwards, [GNU Lesser General Public License](http://opensource.org/licenses/lgpl-license.php)
- Some functionality inspired by [Prototype.js](http://prototypejs.org) Copyright (c) 2005-2007 Sam Stephenson, [MIT License](http://opensource.org/licenses/mit-license.php)

provides: [MooTools, Native, Hash.base, Array.each, $util]

...
*/
/* CMS
All occurences of 'document.id' were replaced with 'document.byid'.
END CMS */
var MooTools = {
    'version': '1.2.5',
    'build': '008d8f0f2fcc2044e54fdd3635341aaab274e757'
};

var Native = function(options) {
    options = options || {};
    var name = options.name;
    var legacy = options.legacy;
    var protect = options.protect;
    var methods = options.implement;
    var generics = options.generics;
    var initialize = options.initialize;
    var afterImplement = options.afterImplement || function() { };
    var object = initialize || legacy;
    generics = generics !== false;

    object.constructor = Native;
    object.$family = { name: 'native' };
    if (legacy && initialize) object.prototype = legacy.prototype;
    object.prototype.constructor = object;

    if (name) {
        var family = name.toLowerCase();
        object.prototype.$family = { name: family };
        Native.typize(object, family);
    }

    var add = function(obj, name, method, force) {
        if (!protect || force || !obj.prototype[name]) obj.prototype[name] = method;
        if (generics) Native.genericize(obj, name, protect);
        afterImplement.call(obj, name, method);
        return obj;
    };

    object.alias = function(a1, a2, a3) {
        if (typeof a1 == 'string') {
            var pa1 = this.prototype[a1];
            if ((a1 = pa1)) return add(this, a2, a1, a3);
        }
        for (var a in a1) this.alias(a, a1[a], a2);
        return this;
    };

    object.implement = function(a1, a2, a3) {
        if (typeof a1 == 'string') return add(this, a1, a2, a3);
        for (var p in a1) add(this, p, a1[p], a2);
        return this;
    };

    if (methods) object.implement(methods);

    return object;
};

Native.genericize = function(object, property, check) {
    if ((!check || !object[property]) && typeof object.prototype[property] == 'function') object[property] = function() {
        var args = Array.prototype.slice.call(arguments);
        return object.prototype[property].apply(args.shift(), args);
    };
};

Native.implement = function(objects, properties) {
    for (var i = 0, l = objects.length; i < l; i++) objects[i].implement(properties);
};

Native.typize = function(object, family) {
    if (!object.type) object.type = function(item) {
        return ($type(item) === family);
    };
};

(function() {
    var natives = { 'Array': Array, 'Date': Date, 'Function': Function, 'Number': Number, 'RegExp': RegExp, 'String': String };
    for (var n in natives) new Native({ name: n, initialize: natives[n], protect: true });

    var types = { 'boolean': Boolean, 'native': Native, 'object': Object };
    for (var t in types) Native.typize(types[t], t);

    var generics = {
        'Array': ["concat", "indexOf", "join", "lastIndexOf", "pop", "push", "reverse", "shift", "slice", "sort", "splice", "toString", "unshift", "valueOf"],
        'String': ["charAt", "charCodeAt", "concat", "indexOf", "lastIndexOf", "match", "replace", "search", "slice", "split", "substr", "substring", "toLowerCase", "toUpperCase", "valueOf"]
    };
    for (var g in generics) {
        for (var i = generics[g].length; i--; ) Native.genericize(natives[g], generics[g][i], true);
    }
})();

var Hash = new Native({

    name: 'Hash',

    initialize: function(object) {
        if ($type(object) == 'hash') object = $unlink(object.getClean());
        for (var key in object) this[key] = object[key];
        return this;
    }

});

Hash.implement({

    forEach: function(fn, bind) {
        for (var key in this) {
            if (this.hasOwnProperty(key)) fn.call(bind, this[key], key, this);
        }
    },

    getClean: function() {
        var clean = {};
        for (var key in this) {
            if (this.hasOwnProperty(key)) clean[key] = this[key];
        }
        return clean;
    },

    getLength: function() {
        var length = 0;
        for (var key in this) {
            if (this.hasOwnProperty(key)) length++;
        }
        return length;
    }

});

Hash.alias('forEach', 'each');

Array.implement({

    forEach: function(fn, bind) {
        for (var i = 0, l = this.length; i < l; i++) fn.call(bind, this[i], i, this);
    }

});

Array.alias('forEach', 'each');

function $A(iterable) {
    if (iterable.item) {
        var l = iterable.length, array = new Array(l);
        while (l--) array[l] = iterable[l];
        return array;
    }
    return Array.prototype.slice.call(iterable);
};

function $arguments(i) {
    return function() {
        return arguments[i];
    };
};

function $chk(obj) {
    return !!(obj || obj === 0);
};

function $clear(timer) {
    clearTimeout(timer);
    clearInterval(timer);
    return null;
};

function $defined(obj) {
    return (obj != undefined);
};

function $each(iterable, fn, bind) {
    var type = $type(iterable);
    ((type == 'arguments' || type == 'collection' || type == 'array') ? Array : Hash).each(iterable, fn, bind);
};

function $empty() { };

function $extend(original, extended) {
    for (var key in (extended || {})) original[key] = extended[key];
    return original;
};

function $H(object) {
    return new Hash(object);
};

function $lambda(value) {
    return ($type(value) == 'function') ? value : function() {
        return value;
    };
};

function $merge() {
    var args = Array.slice(arguments);
    args.unshift({});
    return $mixin.apply(null, args);
};

function $mixin(mix) {
    for (var i = 1, l = arguments.length; i < l; i++) {
        var object = arguments[i];
        if ($type(object) != 'object') continue;
        for (var key in object) {
            var op = object[key], mp = mix[key];
            mix[key] = (mp && $type(op) == 'object' && $type(mp) == 'object') ? $mixin(mp, op) : $unlink(op);
        }
    }
    return mix;
};

function $pick() {
    for (var i = 0, l = arguments.length; i < l; i++) {
        if (arguments[i] != undefined) return arguments[i];
    }
    return null;
};

function $random(min, max) {
    return Math.floor(Math.random() * (max - min + 1) + min);
};

function $splat(obj) {
    var type = $type(obj);
    return (type) ? ((type != 'array' && type != 'arguments') ? [obj] : obj) : [];
};

var $time = Date.now || function() {
    return +new Date;
};

function $try() {
    for (var i = 0, l = arguments.length; i < l; i++) {
        try {
            return arguments[i]();
        } catch (e) { }
    }
    return null;
};

function $type(obj) {
    if (obj == undefined) return false;
    if (obj.$family) return (obj.$family.name == 'number' && !isFinite(obj)) ? false : obj.$family.name;
    if (obj.nodeName) {
        switch (obj.nodeType) {
            case 1: return 'element';
            case 3: return (/\S/).test(obj.nodeValue) ? 'textnode' : 'whitespace';
        }
    } else if (typeof obj.length == 'number') {
        if (obj.callee) return 'arguments';
        else if (obj.item) return 'collection';
    }
    return typeof obj;
};

function $unlink(object) {
    var unlinked;
    switch ($type(object)) {
        case 'object':
            unlinked = {};
            for (var p in object) unlinked[p] = $unlink(object[p]);
            break;
        case 'hash':
            unlinked = new Hash(object);
            break;
        case 'array':
            unlinked = [];
            for (var i = 0, l = object.length; i < l; i++) unlinked[i] = $unlink(object[i]);
            break;
        default: return object;
    }
    return unlinked;
};


/*
---

name: Array

description: Contains Array Prototypes like each, contains, and erase.

license: MIT-style license.

requires: [$util, Array.each]

provides: Array

...
*/

Array.implement({

    every: function(fn, bind) {
        for (var i = 0, l = this.length; i < l; i++) {
            if (!fn.call(bind, this[i], i, this)) return false;
        }
        return true;
    },

    filter: function(fn, bind) {
        var results = [];
        for (var i = 0, l = this.length; i < l; i++) {
            if (fn.call(bind, this[i], i, this)) results.push(this[i]);
        }
        return results;
    },

    clean: function() {
        return this.filter($defined);
    },

    indexOf: function(item, from) {
        var len = this.length;
        for (var i = (from < 0) ? Math.max(0, len + from) : from || 0; i < len; i++) {
            if (this[i] === item) return i;
        }
        return -1;
    },

    map: function(fn, bind) {
        var results = [];
        for (var i = 0, l = this.length; i < l; i++) results[i] = fn.call(bind, this[i], i, this);
        return results;
    },

    some: function(fn, bind) {
        for (var i = 0, l = this.length; i < l; i++) {
            if (fn.call(bind, this[i], i, this)) return true;
        }
        return false;
    },

    associate: function(keys) {
        var obj = {}, length = Math.min(this.length, keys.length);
        for (var i = 0; i < length; i++) obj[keys[i]] = this[i];
        return obj;
    },

    link: function(object) {
        var result = {};
        for (var i = 0, l = this.length; i < l; i++) {
            for (var key in object) {
                if (object[key](this[i])) {
                    result[key] = this[i];
                    delete object[key];
                    break;
                }
            }
        }
        return result;
    },

    contains: function(item, from) {
        return this.indexOf(item, from) != -1;
    },

    extend: function(array) {
        for (var i = 0, j = array.length; i < j; i++) this.push(array[i]);
        return this;
    },

    getLast: function() {
        return (this.length) ? this[this.length - 1] : null;
    },

    getRandom: function() {
        return (this.length) ? this[$random(0, this.length - 1)] : null;
    },

    include: function(item) {
        if (!this.contains(item)) this.push(item);
        return this;
    },

    combine: function(array) {
        for (var i = 0, l = array.length; i < l; i++) this.include(array[i]);
        return this;
    },

    erase: function(item) {
        for (var i = this.length; i--; i) {
            if (this[i] === item) this.splice(i, 1);
        }
        return this;
    },

    empty: function() {
        this.length = 0;
        return this;
    },

    flatten: function() {
        var array = [];
        for (var i = 0, l = this.length; i < l; i++) {
            var type = $type(this[i]);
            if (!type) continue;
            array = array.concat((type == 'array' || type == 'collection' || type == 'arguments') ? Array.flatten(this[i]) : this[i]);
        }
        return array;
    },

    hexToRgb: function(array) {
        if (this.length != 3) return null;
        var rgb = this.map(function(value) {
            if (value.length == 1) value += value;
            return value.toInt(16);
        });
        return (array) ? rgb : 'rgb(' + rgb + ')';
    },

    rgbToHex: function(array) {
        if (this.length < 3) return null;
        if (this.length == 4 && this[3] == 0 && !array) return 'transparent';
        var hex = [];
        for (var i = 0; i < 3; i++) {
            var bit = (this[i] - 0).toString(16);
            hex.push((bit.length == 1) ? '0' + bit : bit);
        }
        return (array) ? hex : '#' + hex.join('');
    }

});


/*
---

name: String

description: Contains String Prototypes like camelCase, capitalize, test, and toInt.

license: MIT-style license.

requires: Native

provides: String

...
*/

String.implement({

    test: function(regex, params) {
        return ((typeof regex == 'string') ? new RegExp(regex, params) : regex).test(this);
    },

    contains: function(string, separator) {
        return (separator) ? (separator + this + separator).indexOf(separator + string + separator) > -1 : this.indexOf(string) > -1;
    },

    trim: function() {
        return this.replace(/^\s+|\s+$/g, '');
    },

    clean: function() {
        return this.replace(/\s+/g, ' ').trim();
    },

    camelCase: function() {
        return this.replace(/-\D/g, function(match) {
            return match.charAt(1).toUpperCase();
        });
    },

    hyphenate: function() {
        return this.replace(/[A-Z]/g, function(match) {
            return ('-' + match.charAt(0).toLowerCase());
        });
    },

    capitalize: function() {
        return this.replace(/\b[a-z]/g, function(match) {
            return match.toUpperCase();
        });
    },

    escapeRegExp: function() {
        return this.replace(/([-.*+?^${}()|[\]\/\\])/g, '\\$1');
    },

    toInt: function(base) {
        return parseInt(this, base || 10);
    },

    toFloat: function() {
        return parseFloat(this);
    },

    hexToRgb: function(array) {
        var hex = this.match(/^#?(\w{1,2})(\w{1,2})(\w{1,2})$/);
        return (hex) ? hex.slice(1).hexToRgb(array) : null;
    },

    rgbToHex: function(array) {
        var rgb = this.match(/\d{1,3}/g);
        return (rgb) ? rgb.rgbToHex(array) : null;
    },

    stripScripts: function(option) {
        var scripts = '';
        var text = this.replace(/<script[^>]*>([\s\S]*?)<\/script>/gi, function() {
            scripts += arguments[1] + '\n';
            return '';
        });
        if (option === true) $exec(scripts);
        else if ($type(option) == 'function') option(scripts, text);
        return text;
    },

    substitute: function(object, regexp) {
        return this.replace(regexp || (/\\?\{([^{}]+)\}/g), function(match, name) {
            if (match.charAt(0) == '\\') return match.slice(1);
            return (object[name] != undefined) ? object[name] : '';
        });
    }

});


/*
---

name: Function

description: Contains Function Prototypes like create, bind, pass, and delay.

license: MIT-style license.

requires: [Native, $util]

provides: Function

...
*/

try {
    delete Function.prototype.bind;
} catch (e) { }

Function.implement({

    extend: function(properties) {
        for (var property in properties) this[property] = properties[property];
        return this;
    },

    create: function(options) {
        var self = this;
        options = options || {};
        return function(event) {
            var args = options.arguments;
            args = (args != undefined) ? $splat(args) : Array.slice(arguments, (options.event) ? 1 : 0);
            if (options.event) args = [event || window.event].extend(args);
            var returns = function() {
                return self.apply(options.bind || null, args);
            };
            if (options.delay) return setTimeout(returns, options.delay);
            if (options.periodical) return setInterval(returns, options.periodical);
            if (options.attempt) return $try(returns);
            return returns();
        };
    },

    run: function(args, bind) {
        return this.apply(bind, $splat(args));
    },

    pass: function(args, bind) {
        return this.create({ bind: bind, arguments: args });
    },

    bind: function(bind, args) {
        return this.create({ bind: bind, arguments: args });
    },

    bindWithEvent: function(bind, args) {
        return this.create({ bind: bind, arguments: args, event: true });
    },

    attempt: function(args, bind) {
        return this.create({ bind: bind, arguments: args, attempt: true })();
    },

    delay: function(delay, bind, args) {
        return this.create({ bind: bind, arguments: args, delay: delay })();
    },

    periodical: function(periodical, bind, args) {
        return this.create({ bind: bind, arguments: args, periodical: periodical })();
    }

});


/*
---

name: Number

description: Contains Number Prototypes like limit, round, times, and ceil.

license: MIT-style license.

requires: [Native, $util]

provides: Number

...
*/

Number.implement({

    limit: function(min, max) {
        return Math.min(max, Math.max(min, this));
    },

    round: function(precision) {
        precision = Math.pow(10, precision || 0);
        return Math.round(this * precision) / precision;
    },

    times: function(fn, bind) {
        for (var i = 0; i < this; i++) fn.call(bind, i, this);
    },

    toFloat: function() {
        return parseFloat(this);
    },

    toInt: function(base) {
        return parseInt(this, base || 10);
    }

});

Number.alias('times', 'each');

(function(math) {
    var methods = {};
    math.each(function(name) {
        if (!Number[name]) methods[name] = function() {
            return Math[name].apply(null, [this].concat($A(arguments)));
        };
    });
    Number.implement(methods);
})(['abs', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'exp', 'floor', 'log', 'max', 'min', 'pow', 'sin', 'sqrt', 'tan']);


/*
---

name: Hash

description: Contains Hash Prototypes. Provides a means for overcoming the JavaScript practical impossibility of extending native Objects.

license: MIT-style license.

requires: Hash.base

provides: Hash

...
*/

Hash.implement({

    has: Object.prototype.hasOwnProperty,

    keyOf: function(value) {
        for (var key in this) {
            if (this.hasOwnProperty(key) && this[key] === value) return key;
        }
        return null;
    },

    hasValue: function(value) {
        return (Hash.keyOf(this, value) !== null);
    },

    extend: function(properties) {
        Hash.each(properties || {}, function(value, key) {
            Hash.set(this, key, value);
        }, this);
        return this;
    },

    combine: function(properties) {
        Hash.each(properties || {}, function(value, key) {
            Hash.include(this, key, value);
        }, this);
        return this;
    },

    erase: function(key) {
        if (this.hasOwnProperty(key)) delete this[key];
        return this;
    },

    get: function(key) {
        return (this.hasOwnProperty(key)) ? this[key] : null;
    },

    set: function(key, value) {
        if (!this[key] || this.hasOwnProperty(key)) this[key] = value;
        return this;
    },

    empty: function() {
        Hash.each(this, function(value, key) {
            delete this[key];
        }, this);
        return this;
    },

    include: function(key, value) {
        if (this[key] == undefined) this[key] = value;
        return this;
    },

    map: function(fn, bind) {
        var results = new Hash;
        Hash.each(this, function(value, key) {
            results.set(key, fn.call(bind, value, key, this));
        }, this);
        return results;
    },

    filter: function(fn, bind) {
        var results = new Hash;
        Hash.each(this, function(value, key) {
            if (fn.call(bind, value, key, this)) results.set(key, value);
        }, this);
        return results;
    },

    every: function(fn, bind) {
        for (var key in this) {
            if (this.hasOwnProperty(key) && !fn.call(bind, this[key], key)) return false;
        }
        return true;
    },

    some: function(fn, bind) {
        for (var key in this) {
            if (this.hasOwnProperty(key) && fn.call(bind, this[key], key)) return true;
        }
        return false;
    },

    getKeys: function() {
        var keys = [];
        Hash.each(this, function(value, key) {
            keys.push(key);
        });
        return keys;
    },

    getValues: function() {
        var values = [];
        Hash.each(this, function(value) {
            values.push(value);
        });
        return values;
    },

    toQueryString: function(base) {
        var queryString = [];
        Hash.each(this, function(value, key) {
            if (base) key = base + '[' + key + ']';
            var result;
            switch ($type(value)) {
                case 'object': result = Hash.toQueryString(value, key); break;
                case 'array':
                    var qs = {};
                    value.each(function(val, i) {
                        qs[i] = val;
                    });
                    result = Hash.toQueryString(qs, key);
                    break;
                default: result = key + '=' + encodeURIComponent(value);
            }
            if (value != undefined) queryString.push(result);
        });

        return queryString.join('&');
    }

});

Hash.alias({ keyOf: 'indexOf', hasValue: 'contains' });


/*
---

name: Class

description: Contains the Class Function for easily creating, extending, and implementing reusable Classes.

license: MIT-style license.

requires: [$util, Native, Array, String, Function, Number, Hash]

provides: Class

...
*/

function Class(params) {

    if (params instanceof Function) params = { initialize: params };

    var newClass = function() {
        Object.reset(this);
        if (newClass._prototyping) return this;
        this._current = $empty;
        var value = (this.initialize) ? this.initialize.apply(this, arguments) : this;
        delete this._current; delete this.caller;
        return value;
    } .extend(this);

    newClass.implement(params);

    newClass.constructor = Class;
    newClass.prototype.constructor = newClass;

    return newClass;

};

Function.prototype.protect = function() {
    this._protected = true;
    return this;
};

Object.reset = function(object, key) {

    if (key == null) {
        for (var p in object) Object.reset(object, p);
        return object;
    }

    delete object[key];

    switch ($type(object[key])) {
        case 'object':
            var F = function() { };
            F.prototype = object[key];
            var i = new F;
            object[key] = Object.reset(i);
            break;
        case 'array': object[key] = $unlink(object[key]); break;
    }

    return object;

};

new Native({ name: 'Class', initialize: Class }).extend({

    instantiate: function(F) {
        F._prototyping = true;
        var proto = new F;
        delete F._prototyping;
        return proto;
    },

    wrap: function(self, key, method) {
        if (method._origin) method = method._origin;

        return function() {
            if (method._protected && this._current == null) throw new Error('The method "' + key + '" cannot be called.');
            var caller = this.caller, current = this._current;
            this.caller = current; this._current = arguments.callee;
            var result = method.apply(this, arguments);
            this._current = current; this.caller = caller;
            return result;
        } .extend({ _owner: self, _origin: method, _name: key });

    }

});

Class.implement({

    implement: function(key, value) {

        if ($type(key) == 'object') {
            for (var p in key) this.implement(p, key[p]);
            return this;
        }

        var mutator = Class.Mutators[key];

        if (mutator) {
            value = mutator.call(this, value);
            if (value == null) return this;
        }

        var proto = this.prototype;

        switch ($type(value)) {

            case 'function':
                if (value._hidden) return this;
                proto[key] = Class.wrap(this, key, value);
                break;

            case 'object':
                var previous = proto[key];
                if ($type(previous) == 'object') $mixin(previous, value);
                else proto[key] = $unlink(value);
                break;

            case 'array':
                proto[key] = $unlink(value);
                break;

            default: proto[key] = value;

        }

        return this;

    }

});

Class.Mutators = {

    Extends: function(parent) {

        this.parent = parent;
        this.prototype = Class.instantiate(parent);

        this.implement('parent', function() {
            var name = this.caller._name, previous = this.caller._owner.parent.prototype[name];
            if (!previous) throw new Error('The method "' + name + '" has no parent.');
            return previous.apply(this, arguments);
        } .protect());

    },

    Implements: function(items) {
        $splat(items).each(function(item) {
            if (item instanceof Function) item = Class.instantiate(item);
            this.implement(item);
        }, this);

    }

};


/*
---

name: Class.Extras

description: Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.

license: MIT-style license.

requires: Class

provides: [Chain, Events, Options, Class.Extras]

...
*/

var Chain = new Class({

    $chain: [],

    chain: function() {
        this.$chain.extend(Array.flatten(arguments));
        return this;
    },

    callChain: function() {
        return (this.$chain.length) ? this.$chain.shift().apply(this, arguments) : false;
    },

    clearChain: function() {
        this.$chain.empty();
        return this;
    }

});

var Events = new Class({

    $events: {},

    addEvent: function(type, fn, internal) {
        type = Events.removeOn(type);
        if (fn != $empty) {
            this.$events[type] = this.$events[type] || [];
            this.$events[type].include(fn);
            if (internal) fn.internal = true;
        }
        return this;
    },

    addEvents: function(events) {
        for (var type in events) this.addEvent(type, events[type]);
        return this;
    },

    fireEvent: function(type, args, delay) {
        type = Events.removeOn(type);
        if (!this.$events || !this.$events[type]) return this;
        this.$events[type].each(function(fn) {
            fn.create({ 'bind': this, 'delay': delay, 'arguments': args })();
        }, this);
        return this;
    },

    removeEvent: function(type, fn) {
        type = Events.removeOn(type);
        if (!this.$events[type]) return this;
        if (!fn.internal) this.$events[type].erase(fn);
        return this;
    },

    removeEvents: function(events) {
        var type;
        if ($type(events) == 'object') {
            for (type in events) this.removeEvent(type, events[type]);
            return this;
        }
        if (events) events = Events.removeOn(events);
        for (type in this.$events) {
            if (events && events != type) continue;
            var fns = this.$events[type];
            for (var i = fns.length; i--; i) this.removeEvent(type, fns[i]);
        }
        return this;
    }

});

Events.removeOn = function(string) {
    return string.replace(/^on([A-Z])/, function(full, first) {
        return first.toLowerCase();
    });
};

var Options = new Class({

    setOptions: function() {
        this.options = $merge.run([this.options].extend(arguments));
        if (!this.addEvent) return this;
        for (var option in this.options) {
            if ($type(this.options[option]) != 'function' || !(/^on[A-Z]/).test(option)) continue;
            this.addEvent(option, this.options[option]);
            delete this.options[option];
        }
        return this;
    }

});


/*
---

name: Browser

description: The Browser Core. Contains Browser initialization, Window and Document, and the Browser Hash.

license: MIT-style license.

requires: [Native, $util]

provides: [Browser, Window, Document, $exec]

...
*/

var Browser = $merge({

    Engine: { name: 'unknown', version: 0 },

    Platform: { name: (window.orientation != undefined) ? 'ipod' : (navigator.platform.match(/mac|win|linux/i) || ['other'])[0].toLowerCase() },

    Features: { xpath: !!(document.evaluate), air: !!(window.runtime), query: !!(document.querySelector) },

    Plugins: {},

    Engines: {

        presto: function() {
            return (!window.opera) ? false : ((arguments.callee.caller) ? 960 : ((document.getElementsByClassName) ? 950 : 925));
        },

        trident: function() {
            return (!window.ActiveXObject) ? false : ((window.XMLHttpRequest) ? ((document.querySelectorAll) ? 6 : 5) : 4);
        },

        webkit: function() {
            return (navigator.taintEnabled) ? false : ((Browser.Features.xpath) ? ((Browser.Features.query) ? 525 : 420) : 419);
        },

        gecko: function() {
            return (!document.getBoxObjectFor && window.mozInnerScreenX == null) ? false : ((document.getElementsByClassName) ? 19 : 18);
        }

    }

}, Browser || {});

Browser.Platform[Browser.Platform.name] = true;

Browser.detect = function() {

    for (var engine in this.Engines) {
        var version = this.Engines[engine]();
        if (version) {
            this.Engine = { name: engine, version: version };
            this.Engine[engine] = this.Engine[engine + version] = true;
            break;
        }
    }

    return { name: engine, version: version };

};

Browser.detect();

Browser.Request = function() {
    return $try(function() {
        return new XMLHttpRequest();
    }, function() {
        return new ActiveXObject('MSXML2.XMLHTTP');
    }, function() {
        return new ActiveXObject('Microsoft.XMLHTTP');
    });
};

Browser.Features.xhr = !!(Browser.Request());

Browser.Plugins.Flash = (function() {
    var version = ($try(function() {
        return navigator.plugins['Shockwave Flash'].description;
    }, function() {
        return new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
    }) || '0 r0').match(/\d+/g);
    return { version: parseInt(version[0] || 0 + '.' + version[1], 10) || 0, build: parseInt(version[2], 10) || 0 };
})();

function $exec(text) {
    if (!text) return text;
    if (window.execScript) {
        window.execScript(text);
    } else {
        var script = document.createElement('script');
        script.setAttribute('type', 'text/javascript');
        script[(Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerText' : 'text'] = text;
        document.head.appendChild(script);
        document.head.removeChild(script);
    }
    return text;
};

Native.UID = 1;

var $uid = (Browser.Engine.trident) ? function(item) {
    return (item.uid || (item.uid = [Native.UID++]))[0];
} : function(item) {
    return item.uid || (item.uid = Native.UID++);
};

var Window = new Native({

    name: 'Window',

    legacy: (Browser.Engine.trident) ? null : window.Window,

    initialize: function(win) {
        $uid(win);
        if (!win.Element) {
            win.Element = $empty;
            if (Browser.Engine.webkit) win.document.createElement("iframe"); //fixes safari 2
            win.Element.prototype = (Browser.Engine.webkit) ? window["[[DOMElement.prototype]]"] : {};
        }
        win.document.window = win;
        return $extend(win, Window.Prototype);
    },

    afterImplement: function(property, value) {
        window[property] = Window.Prototype[property] = value;
    }

});

Window.Prototype = { $family: { name: 'window'} };

new Window(window);

var Document = new Native({

    name: 'Document',

    legacy: (Browser.Engine.trident) ? null : window.Document,

    initialize: function(doc) {
        $uid(doc);
        doc.head = doc.getElementsByTagName('head')[0];
        doc.html = doc.getElementsByTagName('html')[0];
        if (Browser.Engine.trident && Browser.Engine.version <= 4) $try(function() {
            doc.execCommand("BackgroundImageCache", false, true);
        });
        if (Browser.Engine.trident) doc.window.attachEvent('onunload', function() {
            doc.window.detachEvent('onunload', arguments.callee);
            doc.head = doc.html = doc.window = null;
        });
        return $extend(doc, Document.Prototype);
    },

    afterImplement: function(property, value) {
        document[property] = Document.Prototype[property] = value;
    }

});

Document.Prototype = { $family: { name: 'document'} };

new Document(document);


/*
---

name: Element

description: One of the most important items in MooTools. Contains the dollar function, the dollars function, and an handful of cross-browser, time-saver methods to let you easily work with HTML Elements.

license: MIT-style license.

requires: [Window, Document, Array, String, Function, Number, Hash]

provides: [Element, Elements, $, $$, Iframe]

...
*/

var Element = new Native({

    name: 'Element',

    legacy: window.Element,

    initialize: function(tag, props) {
        var konstructor = Element.Constructors.get(tag);
        if (konstructor) return konstructor(props);
        if (typeof tag == 'string') return document.newElement(tag, props);
        return document.byid(tag).set(props);
    },

    afterImplement: function(key, value) {
        Element.Prototype[key] = value;
        if (Array[key]) return;
        Elements.implement(key, function() {
            var items = [], elements = true;
            for (var i = 0, j = this.length; i < j; i++) {
                var returns = this[i][key].apply(this[i], arguments);
                items.push(returns);
                if (elements) elements = ($type(returns) == 'element');
            }
            return (elements) ? new Elements(items) : items;
        });
    }

});

Element.Prototype = { $family: { name: 'element'} };

Element.Constructors = new Hash;

var IFrame = new Native({

    name: 'IFrame',

    generics: false,

    initialize: function() {
        var params = Array.link(arguments, { properties: Object.type, iframe: $defined });
        var props = params.properties || {};
        var iframe = document.byid(params.iframe);
        var onload = props.onload || $empty;
        delete props.onload;
        props.id = props.name = $pick(props.id, props.name, iframe ? (iframe.id || iframe.name) : 'IFrame_' + $time());
        iframe = new Element(iframe || 'iframe', props);
        var onFrameLoad = function() {
            var host = $try(function() {
                return iframe.contentWindow.location.host;
            });
            if (!host || host == window.location.host) {
                var win = new Window(iframe.contentWindow);
                new Document(iframe.contentWindow.document);
                $extend(win.Element.prototype, Element.Prototype);
            }
            onload.call(iframe.contentWindow, iframe.contentWindow.document);
        };
        var contentWindow = $try(function() {
            return iframe.contentWindow;
        });
        ((contentWindow && contentWindow.document.body) || window.frames[props.id]) ? onFrameLoad() : iframe.addListener('load', onFrameLoad);
        return iframe;
    }

});

var Elements = new Native({

    initialize: function(elements, options) {
        options = $extend({ ddup: true, cash: true }, options);
        elements = elements || [];
        if (options.ddup || options.cash) {
            var uniques = {}, returned = [];
            for (var i = 0, l = elements.length; i < l; i++) {
                var el = document.byid(elements[i], !options.cash);
                if (options.ddup) {
                    if (uniques[el.uid]) continue;
                    uniques[el.uid] = true;
                }
                if (el) returned.push(el);
            }
            elements = returned;
        }
        return (options.cash) ? $extend(elements, this) : elements;
    }

});

Elements.implement({

    filter: function(filter, bind) {
        if (!filter) return this;
        return new Elements(Array.filter(this, (typeof filter == 'string') ? function(item) {
            return item.match(filter);
        } : filter, bind));
    }

});

(function() {

    /*<ltIE8>*/
    var createElementAcceptsHTML;
    try {
        var x = document.createElement('<input name=x>');
        createElementAcceptsHTML = (x.name == 'x');
    } catch (e) { }

    var escapeQuotes = function(html) {
        return ('' + html).replace(/&/g, '&amp;').replace(/"/g, '&quot;');
    };
    /*</ltIE8>*/

    Document.implement({

        newElement: function(tag, props) {
            if (props && props.checked != null) props.defaultChecked = props.checked;
            /*<ltIE8>*/// Fix for readonly name and type properties in IE < 8
            if (createElementAcceptsHTML && props) {
                tag = '<' + tag;
                if (props.name) tag += ' name="' + escapeQuotes(props.name) + '"';
                if (props.type) tag += ' type="' + escapeQuotes(props.type) + '"';
                tag += '>';
                delete props.name;
                delete props.type;
            }
            /*</ltIE8>*/
            return this.id(this.createElement(tag)).set(props);
        },

        newTextNode: function(text) {
            return this.createTextNode(text);
        },

        getDocument: function() {
            return this;
        },

        getWindow: function() {
            return this.window;
        },
        /* CMS
        'id' was replaced with 'byid' 
        END CMS */
        byid: (function() {

            var types = {

                string: function(id, nocash, doc) {
                    id = doc.getElementById(id);
                    return (id) ? types.element(id, nocash) : null;
                },

                element: function(el, nocash) {
                    $uid(el);
                    if (!nocash && !el.$family && !(/^object|embed$/i).test(el.tagName)) {
                        var proto = Element.Prototype;
                        for (var p in proto) el[p] = proto[p];
                    };
                    return el;
                },

                object: function(obj, nocash, doc) {
                    if (obj.toElement) return types.element(obj.toElement(doc), nocash);
                    return null;
                }

            };

            types.textnode = types.whitespace = types.window = types.document = $arguments(0);

            return function(el, nocash, doc) {
                if (el && el.$family && el.uid) return el;
                var type = $type(el);
                return (types[type]) ? types[type](el, nocash, doc || document) : null;
            };

        })()

    });

})();

if (window.$ == null) Window.implement({
    $: function(el, nc) {
        return document.byid(el, nc, this.document);
    }
});

Window.implement({

    $$: function(selector) {
        if (arguments.length == 1 && typeof selector == 'string') return this.document.getElements(selector);
        var elements = [];
        var args = Array.flatten(arguments);
        for (var i = 0, l = args.length; i < l; i++) {
            var item = args[i];
            switch ($type(item)) {
                case 'element': elements.push(item); break;
                case 'string': elements.extend(this.document.getElements(item, true));
            }
        }
        return new Elements(elements);
    },

    getDocument: function() {
        return this.document;
    },

    getWindow: function() {
        return this;
    }

});

Native.implement([Element, Document], {

    getElement: function(selector, nocash) {
        return document.byid(this.getElements(selector, true)[0] || null, nocash);
    },

    getElements: function(tags, nocash) {
        tags = tags.split(',');
        var elements = [];
        var ddup = (tags.length > 1);
        tags.each(function(tag) {
            var partial = this.getElementsByTagName(tag.trim());
            (ddup) ? elements.extend(partial) : elements = partial;
        }, this);
        return new Elements(elements, { ddup: ddup, cash: !nocash });
    }

});

(function() {

    var collected = {}, storage = {};
    var props = { input: 'checked', option: 'selected', textarea: (Browser.Engine.webkit && Browser.Engine.version < 420) ? 'innerHTML' : 'value' };

    var get = function(uid) {
        return (storage[uid] || (storage[uid] = {}));
    };

    var clean = function(item, retain) {
        if (!item) return;
        var uid = item.uid;
        if (retain !== true) retain = false;
        if (Browser.Engine.trident) {
            if (item.clearAttributes) {
                var clone = retain && item.cloneNode(false);
                item.clearAttributes();
                if (clone) item.mergeAttributes(clone);
            } else if (item.removeEvents) {
                item.removeEvents();
            }
            if ((/object/i).test(item.tagName)) {
                for (var p in item) {
                    if (typeof item[p] == 'function') item[p] = $empty;
                }
                Element.dispose(item);
            }
        }
        if (!uid) return;
        collected[uid] = storage[uid] = null;
    };

    var purge = function() {
        Hash.each(collected, clean);
        if (Browser.Engine.trident) $A(document.getElementsByTagName('object')).each(clean);
        if (window.CollectGarbage) CollectGarbage();
        collected = storage = null;
    };

    var walk = function(element, walk, start, match, all, nocash) {
        var el = element[start || walk];
        var elements = [];
        while (el) {
            if (el.nodeType == 1 && (!match || Element.match(el, match))) {
                if (!all) return document.byid(el, nocash);
                elements.push(el);
            }
            el = el[walk];
        }
        return (all) ? new Elements(elements, { ddup: false, cash: !nocash }) : null;
    };

    var attributes = {
        'html': 'innerHTML',
        'class': 'className',
        'for': 'htmlFor',
        'defaultValue': 'defaultValue',
        'text': (Browser.Engine.trident || (Browser.Engine.webkit && Browser.Engine.version < 420)) ? 'innerText' : 'textContent'
    };
    var bools = ['compact', 'nowrap', 'ismap', 'declare', 'noshade', 'checked', 'disabled', 'readonly', 'multiple', 'selected', 'noresize', 'defer'];
    var camels = ['value', 'type', 'defaultValue', 'accessKey', 'cellPadding', 'cellSpacing', 'colSpan', 'frameBorder', 'maxLength', 'readOnly', 'rowSpan', 'tabIndex', 'useMap'];

    bools = bools.associate(bools);

    Hash.extend(attributes, bools);
    Hash.extend(attributes, camels.associate(camels.map(String.toLowerCase)));

    var inserters = {

        before: function(context, element) {
            if (element.parentNode) element.parentNode.insertBefore(context, element);
        },

        after: function(context, element) {
            if (!element.parentNode) return;
            var next = element.nextSibling;
            (next) ? element.parentNode.insertBefore(context, next) : element.parentNode.appendChild(context);
        },

        bottom: function(context, element) {
            element.appendChild(context);
        },

        top: function(context, element) {
            var first = element.firstChild;
            (first) ? element.insertBefore(context, first) : element.appendChild(context);
        }

    };

    inserters.inside = inserters.bottom;

    Hash.each(inserters, function(inserter, where) {

        where = where.capitalize();

        Element.implement('inject' + where, function(el) {
            inserter(this, document.byid(el, true));
            return this;
        });

        Element.implement('grab' + where, function(el) {
            inserter(document.byid(el, true), this);
            return this;
        });

    });

    Element.implement({

        set: function(prop, value) {
            switch ($type(prop)) {
                case 'object':
                    for (var p in prop) this.set(p, prop[p]);
                    break;
                case 'string':
                    var property = Element.Properties.get(prop);
                    (property && property.set) ? property.set.apply(this, Array.slice(arguments, 1)) : this.setProperty(prop, value);
            }
            return this;
        },

        get: function(prop) {
            var property = Element.Properties.get(prop);
            return (property && property.get) ? property.get.apply(this, Array.slice(arguments, 1)) : this.getProperty(prop);
        },

        erase: function(prop) {
            var property = Element.Properties.get(prop);
            (property && property.erase) ? property.erase.apply(this) : this.removeProperty(prop);
            return this;
        },

        setProperty: function(attribute, value) {
            var key = attributes[attribute];
            if (value == undefined) return this.removeProperty(attribute);
            if (key && bools[attribute]) value = !!value;
            (key) ? this[key] = value : this.setAttribute(attribute, '' + value);
            return this;
        },

        setProperties: function(attributes) {
            for (var attribute in attributes) this.setProperty(attribute, attributes[attribute]);
            return this;
        },

        getProperty: function(attribute) {
            var key = attributes[attribute];
            var value = (key) ? this[key] : this.getAttribute(attribute, 2);
            return (bools[attribute]) ? !!value : (key) ? value : value || null;
        },

        getProperties: function() {
            var args = $A(arguments);
            return args.map(this.getProperty, this).associate(args);
        },

        removeProperty: function(attribute) {
            var key = attributes[attribute];
            (key) ? this[key] = (key && bools[attribute]) ? false : '' : this.removeAttribute(attribute);
            return this;
        },

        removeProperties: function() {
            Array.each(arguments, this.removeProperty, this);
            return this;
        },

        hasClass: function(className) {
            return this.className.contains(className, ' ');
        },

        addClass: function(className) {
            if (!this.hasClass(className)) this.className = (this.className + ' ' + className).clean();
            return this;
        },

        removeClass: function(className) {
            this.className = this.className.replace(new RegExp('(^|\\s)' + className + '(?:\\s|$)'), '$1');
            return this;
        },

        toggleClass: function(className) {
            return this.hasClass(className) ? this.removeClass(className) : this.addClass(className);
        },

        adopt: function() {
            Array.flatten(arguments).each(function(element) {
                element = document.byid(element, true);
                if (element) this.appendChild(element);
            }, this);
            return this;
        },

        appendText: function(text, where) {
            return this.grab(this.getDocument().newTextNode(text), where);
        },

        grab: function(el, where) {
            inserters[where || 'bottom'](document.byid(el, true), this);
            return this;
        },

        inject: function(el, where) {
            inserters[where || 'bottom'](this, document.byid(el, true));
            return this;
        },

        replaces: function(el) {
            el = document.byid(el, true);
            el.parentNode.replaceChild(this, el);
            return this;
        },

        wraps: function(el, where) {
            el = document.byid(el, true);
            return this.replaces(el).grab(el, where);
        },

        getPrevious: function(match, nocash) {
            return walk(this, 'previousSibling', null, match, false, nocash);
        },

        getAllPrevious: function(match, nocash) {
            return walk(this, 'previousSibling', null, match, true, nocash);
        },

        getNext: function(match, nocash) {
            return walk(this, 'nextSibling', null, match, false, nocash);
        },

        getAllNext: function(match, nocash) {
            return walk(this, 'nextSibling', null, match, true, nocash);
        },

        getFirst: function(match, nocash) {
            return walk(this, 'nextSibling', 'firstChild', match, false, nocash);
        },

        getLast: function(match, nocash) {
            return walk(this, 'previousSibling', 'lastChild', match, false, nocash);
        },

        getParent: function(match, nocash) {
            return walk(this, 'parentNode', null, match, false, nocash);
        },

        getParents: function(match, nocash) {
            return walk(this, 'parentNode', null, match, true, nocash);
        },

        getSiblings: function(match, nocash) {
            return this.getParent().getChildren(match, nocash).erase(this);
        },

        getChildren: function(match, nocash) {
            return walk(this, 'nextSibling', 'firstChild', match, true, nocash);
        },

        getWindow: function() {
            return this.ownerDocument.window;
        },

        getDocument: function() {
            return this.ownerDocument;
        },

        getElementById: function(id, nocash) {
            var el = this.ownerDocument.getElementById(id);
            if (!el) return null;
            for (var parent = el.parentNode; parent != this; parent = parent.parentNode) {
                if (!parent) return null;
            }
            return document.byid(el, nocash);
        },

        getSelected: function() {
            return new Elements($A(this.options).filter(function(option) {
                return option.selected;
            }));
        },

        getComputedStyle: function(property) {
            if (this.currentStyle) return this.currentStyle[property.camelCase()];
            var computed = this.getDocument().defaultView.getComputedStyle(this, null);
            return (computed) ? computed.getPropertyValue([property.hyphenate()]) : null;
        },

        toQueryString: function() {
            var queryString = [];
            this.getElements('input, select, textarea', true).each(function(el) {
                if (!el.name || el.disabled || el.type == 'submit' || el.type == 'reset' || el.type == 'file') return;
                var value = (el.tagName.toLowerCase() == 'select') ? Element.getSelected(el).map(function(opt) {
                    return opt.value;
                }) : ((el.type == 'radio' || el.type == 'checkbox') && !el.checked) ? null : el.value;
                $splat(value).each(function(val) {
                    if (typeof val != 'undefined') queryString.push(el.name + '=' + encodeURIComponent(val));
                });
            });
            return queryString.join('&');
        },

        clone: function(contents, keepid) {
            contents = contents !== false;
            var clone = this.cloneNode(contents);
            var clean = function(node, element) {
                if (!keepid) node.removeAttribute('id');
                if (Browser.Engine.trident) {
                    node.clearAttributes();
                    node.mergeAttributes(element);
                    node.removeAttribute('uid');
                    if (node.options) {
                        var no = node.options, eo = element.options;
                        for (var j = no.length; j--; ) no[j].selected = eo[j].selected;
                    }
                }
                var prop = props[element.tagName.toLowerCase()];
                if (prop && element[prop]) node[prop] = element[prop];
            };

            if (contents) {
                var ce = clone.getElementsByTagName('*'), te = this.getElementsByTagName('*');
                for (var i = ce.length; i--; ) clean(ce[i], te[i]);
            }

            clean(clone, this);
            return document.byid(clone);
        },

        destroy: function() {
            Element.empty(this);
            Element.dispose(this);
            clean(this, true);
            return null;
        },

        empty: function() {
            $A(this.childNodes).each(function(node) {
                Element.destroy(node);
            });
            return this;
        },

        dispose: function() {
            return (this.parentNode) ? this.parentNode.removeChild(this) : this;
        },

        hasChild: function(el) {
            el = document.byid(el, true);
            if (!el) return false;
            if (Browser.Engine.webkit && Browser.Engine.version < 420) return $A(this.getElementsByTagName(el.tagName)).contains(el);
            return (this.contains) ? (this != el && this.contains(el)) : !!(this.compareDocumentPosition(el) & 16);
        },

        match: function(tag) {
            return (!tag || (tag == this) || (Element.get(this, 'tag') == tag));
        }

    });

    Native.implement([Element, Window, Document], {

        addListener: function(type, fn) {
            if (type == 'unload') {
                var old = fn, self = this;
                fn = function() {
                    self.removeListener('unload', fn);
                    old();
                };
            } else {
                collected[this.uid] = this;
            }
            if (this.addEventListener) this.addEventListener(type, fn, false);
            else this.attachEvent('on' + type, fn);
            return this;
        },

        removeListener: function(type, fn) {
            if (this.removeEventListener) this.removeEventListener(type, fn, false);
            else this.detachEvent('on' + type, fn);
            return this;
        },

        retrieve: function(property, dflt) {
            var storage = get(this.uid), prop = storage[property];
            if (dflt != undefined && prop == undefined) prop = storage[property] = dflt;
            return $pick(prop);
        },

        store: function(property, value) {
            var storage = get(this.uid);
            storage[property] = value;
            return this;
        },

        eliminate: function(property) {
            var storage = get(this.uid);
            delete storage[property];
            return this;
        }

    });

    window.addListener('unload', purge);

})();

Element.Properties = new Hash;

Element.Properties.style = {

    set: function(style) {
        this.style.cssText = style;
    },

    get: function() {
        return this.style.cssText;
    },

    erase: function() {
        this.style.cssText = '';
    }

};

Element.Properties.tag = {

    get: function() {
        return this.tagName.toLowerCase();
    }

};

Element.Properties.html = (function() {
    var wrapper = document.createElement('div');

    var translations = {
        table: [1, '<table>', '</table>'],
        select: [1, '<select>', '</select>'],
        tbody: [2, '<table><tbody>', '</tbody></table>'],
        tr: [3, '<table><tbody><tr>', '</tr></tbody></table>']
    };
    translations.thead = translations.tfoot = translations.tbody;

    var html = {
        set: function() {
            var html = Array.flatten(arguments).join('');
            var wrap = Browser.Engine.trident && translations[this.get('tag')];
            if (wrap) {
                var first = wrapper;
                first.innerHTML = wrap[1] + html + wrap[2];
                for (var i = wrap[0]; i--; ) first = first.firstChild;
                this.empty().adopt(first.childNodes);
            } else {
                this.innerHTML = html;
            }
        }
    };

    html.erase = html.set;

    return html;
})();

if (Browser.Engine.webkit && Browser.Engine.version < 420) Element.Properties.text = {
    get: function() {
        if (this.innerText) return this.innerText;
        var temp = this.ownerDocument.newElement('div', { html: this.innerHTML }).inject(this.ownerDocument.body);
        var text = temp.innerText;
        temp.destroy();
        return text;
    }
};


/*
---

name: Element.Dimensions

description: Contains methods to work with size, scroll, or positioning of Elements and the window object.

license: MIT-style license.

credits:
- Element positioning based on the [qooxdoo](http://qooxdoo.org/) code and smart browser fixes, [LGPL License](http://www.gnu.org/licenses/lgpl.html).
- Viewport dimensions based on [YUI](http://developer.yahoo.com/yui/) code, [BSD License](http://developer.yahoo.com/yui/license.html).

requires: Element

provides: Element.Dimensions

...
*/

(function() {

    Element.implement({

        scrollTo: function(x, y) {
            if (isBody(this)) {
                this.getWindow().scrollTo(x, y);
            } else {
                this.scrollLeft = x;
                this.scrollTop = y;
            }
            return this;
        },

        getSize: function() {
            if (isBody(this)) return this.getWindow().getSize();
            return { x: this.offsetWidth, y: this.offsetHeight };
        },

        getScrollSize: function() {
            if (isBody(this)) return this.getWindow().getScrollSize();
            return { x: this.scrollWidth, y: this.scrollHeight };
        },

        getScroll: function() {
            if (isBody(this)) return this.getWindow().getScroll();
            return { x: this.scrollLeft, y: this.scrollTop };
        },

        getScrolls: function() {
            var element = this, position = { x: 0, y: 0 };
            while (element && !isBody(element)) {
                position.x += element.scrollLeft;
                position.y += element.scrollTop;
                element = element.parentNode;
            }
            return position;
        },

        getOffsetParent: function() {
            var element = this;
            if (isBody(element)) return null;
            if (!Browser.Engine.trident) return element.offsetParent;
            while ((element = element.parentNode) && !isBody(element)) {
                if (styleString(element, 'position') != 'static') return element;
            }
            return null;
        },

        getOffsets: function() {
            if (this.getBoundingClientRect) {
                var bound = this.getBoundingClientRect(),
				html = document.byid(this.getDocument().documentElement),
				htmlScroll = html.getScroll(),
				elemScrolls = this.getScrolls(),
				elemScroll = this.getScroll(),
				isFixed = (styleString(this, 'position') == 'fixed');

                return {
                    x: bound.left.toInt() + elemScrolls.x - elemScroll.x + ((isFixed) ? 0 : htmlScroll.x) - html.clientLeft,
                    y: bound.top.toInt() + elemScrolls.y - elemScroll.y + ((isFixed) ? 0 : htmlScroll.y) - html.clientTop
                };
            }

            var element = this, position = { x: 0, y: 0 };
            if (isBody(this)) return position;

            while (element && !isBody(element)) {
                position.x += element.offsetLeft;
                position.y += element.offsetTop;

                if (Browser.Engine.gecko) {
                    if (!borderBox(element)) {
                        position.x += leftBorder(element);
                        position.y += topBorder(element);
                    }
                    var parent = element.parentNode;
                    if (parent && styleString(parent, 'overflow') != 'visible') {
                        position.x += leftBorder(parent);
                        position.y += topBorder(parent);
                    }
                } else if (element != this && Browser.Engine.webkit) {
                    position.x += leftBorder(element);
                    position.y += topBorder(element);
                }

                element = element.offsetParent;
            }
            if (Browser.Engine.gecko && !borderBox(this)) {
                position.x -= leftBorder(this);
                position.y -= topBorder(this);
            }
            return position;
        },

        getPosition: function(relative) {
            if (isBody(this)) return { x: 0, y: 0 };
            var offset = this.getOffsets(),
				scroll = this.getScrolls();
            var position = {
                x: offset.x - scroll.x,
                y: offset.y - scroll.y
            };
            var relativePosition = (relative && (relative = document.byid(relative))) ? relative.getPosition() : { x: 0, y: 0 };
            return { x: position.x - relativePosition.x, y: position.y - relativePosition.y };
        },

        getCoordinates: function(element) {
            if (isBody(this)) return this.getWindow().getCoordinates();
            var position = this.getPosition(element),
				size = this.getSize();
            var obj = {
                left: position.x,
                top: position.y,
                width: size.x,
                height: size.y
            };
            obj.right = obj.left + obj.width;
            obj.bottom = obj.top + obj.height;
            return obj;
        },

        computePosition: function(obj) {
            return {
                left: obj.x - styleNumber(this, 'margin-left'),
                top: obj.y - styleNumber(this, 'margin-top')
            };
        },

        setPosition: function(obj) {
            return this.setStyles(this.computePosition(obj));
        }

    });


    Native.implement([Document, Window], {

        getSize: function() {
            if (Browser.Engine.presto || Browser.Engine.webkit) {
                var win = this.getWindow();
                return { x: win.innerWidth, y: win.innerHeight };
            }
            var doc = getCompatElement(this);
            return { x: doc.clientWidth, y: doc.clientHeight };
        },

        getScroll: function() {
            var win = this.getWindow(), doc = getCompatElement(this);
            return { x: win.pageXOffset || doc.scrollLeft, y: win.pageYOffset || doc.scrollTop };
        },

        getScrollSize: function() {
            var doc = getCompatElement(this), min = this.getSize();
            return { x: Math.max(doc.scrollWidth, min.x), y: Math.max(doc.scrollHeight, min.y) };
        },

        getPosition: function() {
            return { x: 0, y: 0 };
        },

        getCoordinates: function() {
            var size = this.getSize();
            return { top: 0, left: 0, bottom: size.y, right: size.x, height: size.y, width: size.x };
        }

    });

    // private methods

    var styleString = Element.getComputedStyle;

    function styleNumber(element, style) {
        return styleString(element, style).toInt() || 0;
    };

    function borderBox(element) {
        return styleString(element, '-moz-box-sizing') == 'border-box';
    };

    function topBorder(element) {
        return styleNumber(element, 'border-top-width');
    };

    function leftBorder(element) {
        return styleNumber(element, 'border-left-width');
    };

    function isBody(element) {
        return (/^(?:body|html)$/i).test(element.tagName);
    };

    function getCompatElement(element) {
        var doc = element.getDocument();
        return (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
    };

})();

//aliases
Element.alias('setPosition', 'position'); //compatability

Native.implement([Window, Document, Element], {

    getHeight: function() {
        return this.getSize().y;
    },

    getWidth: function() {
        return this.getSize().x;
    },

    getScrollTop: function() {
        return this.getScroll().y;
    },

    getScrollLeft: function() {
        return this.getScroll().x;
    },

    getScrollHeight: function() {
        return this.getScrollSize().y;
    },

    getScrollWidth: function() {
        return this.getScrollSize().x;
    },

    getTop: function() {
        return this.getPosition().y;
    },

    getLeft: function() {
        return this.getPosition().x;
    }

});


/*
---

name: Event

description: Contains the Event Class, to make the event object cross-browser.

license: MIT-style license.

requires: [Window, Document, Hash, Array, Function, String]

provides: Event

...
*/

var Event = new Native({

    name: 'Event',

    initialize: function(event, win) {
        win = win || window;
        var doc = win.document;
        event = event || win.event;
        if (event.$extended) return event;
        this.$extended = true;
        var type = event.type;
        var target = event.target || event.srcElement;
        while (target && target.nodeType == 3) target = target.parentNode;

        if (type.test(/key/)) {
            var code = event.which || event.keyCode;
            var key = Event.Keys.keyOf(code);
            if (type == 'keydown') {
                var fKey = code - 111;
                if (fKey > 0 && fKey < 13) key = 'f' + fKey;
            }
            key = key || String.fromCharCode(code).toLowerCase();
        } else if (type.match(/(click|mouse|menu)/i)) {
            doc = (!doc.compatMode || doc.compatMode == 'CSS1Compat') ? doc.html : doc.body;
            var page = {
                x: event.pageX || event.clientX + doc.scrollLeft,
                y: event.pageY || event.clientY + doc.scrollTop
            };
            var client = {
                x: (event.pageX) ? event.pageX - win.pageXOffset : event.clientX,
                y: (event.pageY) ? event.pageY - win.pageYOffset : event.clientY
            };
            if (type.match(/DOMMouseScroll|mousewheel/)) {
                var wheel = (event.wheelDelta) ? event.wheelDelta / 120 : -(event.detail || 0) / 3;
            }
            var rightClick = (event.which == 3) || (event.button == 2);
            var related = null;
            if (type.match(/over|out/)) {
                switch (type) {
                    case 'mouseover': related = event.relatedTarget || event.fromElement; break;
                    case 'mouseout': related = event.relatedTarget || event.toElement;
                }
                if (!(function() {
                    while (related && related.nodeType == 3) related = related.parentNode;
                    return true;
                }).create({ attempt: Browser.Engine.gecko })()) related = false;
            }
        }

        return $extend(this, {
            event: event,
            type: type,

            page: page,
            client: client,
            rightClick: rightClick,

            wheel: wheel,

            relatedTarget: related,
            target: target,

            code: code,
            key: key,

            shift: event.shiftKey,
            control: event.ctrlKey,
            alt: event.altKey,
            meta: event.metaKey
        });
    }

});

Event.Keys = new Hash({
    'enter': 13,
    'up': 38,
    'down': 40,
    'left': 37,
    'right': 39,
    'esc': 27,
    'space': 32,
    'backspace': 8,
    'tab': 9,
    'delete': 46
});

Event.implement({

    stop: function() {
        return this.stopPropagation().preventDefault();
    },

    stopPropagation: function() {
        if (this.event.stopPropagation) this.event.stopPropagation();
        else this.event.cancelBubble = true;
        return this;
    },

    preventDefault: function() {
        if (this.event.preventDefault) this.event.preventDefault();
        else this.event.returnValue = false;
        return this;
    }

});


/*
---

name: Element.Event

description: Contains Element methods for dealing with events. This file also includes mouseenter and mouseleave custom Element Events.

license: MIT-style license.

requires: [Element, Event]

provides: Element.Event

...
*/

Element.Properties.events = { set: function(events) {
    this.addEvents(events);
}
};

Native.implement([Element, Window, Document], {

    addEvent: function(type, fn) {
        var events = this.retrieve('events', {});
        events[type] = events[type] || { 'keys': [], 'values': [] };
        if (events[type].keys.contains(fn)) return this;
        events[type].keys.push(fn);
        var realType = type, custom = Element.Events.get(type), condition = fn, self = this;
        if (custom) {
            if (custom.onAdd) custom.onAdd.call(this, fn);
            if (custom.condition) {
                condition = function(event) {
                    if (custom.condition.call(this, event)) return fn.call(this, event);
                    return true;
                };
            }
            realType = custom.base || realType;
        }
        var defn = function() {
            return fn.call(self);
        };
        var nativeEvent = Element.NativeEvents[realType];
        if (nativeEvent) {
            if (nativeEvent == 2) {
                defn = function(event) {
                    event = new Event(event, self.getWindow());
                    if (condition.call(self, event) === false) event.stop();
                };
            }
            this.addListener(realType, defn);
        }
        events[type].values.push(defn);
        return this;
    },

    removeEvent: function(type, fn) {
        var events = this.retrieve('events');
        if (!events || !events[type]) return this;
        var pos = events[type].keys.indexOf(fn);
        if (pos == -1) return this;
        events[type].keys.splice(pos, 1);
        var value = events[type].values.splice(pos, 1)[0];
        var custom = Element.Events.get(type);
        if (custom) {
            if (custom.onRemove) custom.onRemove.call(this, fn);
            type = custom.base || type;
        }
        return (Element.NativeEvents[type]) ? this.removeListener(type, value) : this;
    },

    addEvents: function(events) {
        for (var event in events) this.addEvent(event, events[event]);
        return this;
    },

    removeEvents: function(events) {
        var type;
        if ($type(events) == 'object') {
            for (type in events) this.removeEvent(type, events[type]);
            return this;
        }
        var attached = this.retrieve('events');
        if (!attached) return this;
        if (!events) {
            for (type in attached) this.removeEvents(type);
            this.eliminate('events');
        } else if (attached[events]) {
            while (attached[events].keys[0]) this.removeEvent(events, attached[events].keys[0]);
            attached[events] = null;
        }
        return this;
    },

    fireEvent: function(type, args, delay) {
        var events = this.retrieve('events');
        if (!events || !events[type]) return this;
        events[type].keys.each(function(fn) {
            fn.create({ 'bind': this, 'delay': delay, 'arguments': args })();
        }, this);
        return this;
    },

    cloneEvents: function(from, type) {
        from = document.byid(from);
        var fevents = from.retrieve('events');
        if (!fevents) return this;
        if (!type) {
            for (var evType in fevents) this.cloneEvents(from, evType);
        } else if (fevents[type]) {
            fevents[type].keys.each(function(fn) {
                this.addEvent(type, fn);
            }, this);
        }
        return this;
    }

});

// IE9
try {
    if (typeof HTMLElement != 'undefined')
        HTMLElement.prototype.fireEvent = Element.prototype.fireEvent;
} catch (e) { }

Element.NativeEvents = {
    click: 2, dblclick: 2, mouseup: 2, mousedown: 2, contextmenu: 2, //mouse buttons
    mousewheel: 2, DOMMouseScroll: 2, //mouse wheel
    mouseover: 2, mouseout: 2, mousemove: 2, selectstart: 2, selectend: 2, //mouse movement
    keydown: 2, keypress: 2, keyup: 2, //keyboard
    focus: 2, blur: 2, change: 2, reset: 2, select: 2, submit: 2, //form elements
    load: 1, unload: 1, beforeunload: 2, resize: 1, move: 1, DOMContentLoaded: 1, readystatechange: 1, //window
    error: 1, abort: 1, scroll: 1 //misc
};

(function() {

    var $check = function(event) {
        var related = event.relatedTarget;
        if (related == undefined) return true;
        if (related === false) return false;
        return ($type(this) != 'document' && related != this && related.prefix != 'xul' && !this.hasChild(related));
    };

    Element.Events = new Hash({

        mouseenter: {
            base: 'mouseover',
            condition: $check
        },

        mouseleave: {
            base: 'mouseout',
            condition: $check
        },

        mousewheel: {
            base: (Browser.Engine.gecko) ? 'DOMMouseScroll' : 'mousewheel'
        }

    });

})();


/*
---

name: Element.Style

description: Contains methods for interacting with the styles of Elements in a fashionable way.

license: MIT-style license.

requires: Element

provides: Element.Style

...
*/

Element.Properties.styles = { set: function(styles) {
    this.setStyles(styles);
}
};

Element.Properties.opacity = {

    set: function(opacity, novisibility) {
        if (!novisibility) {
            if (opacity == 0) {
                if (this.style.visibility != 'hidden') this.style.visibility = 'hidden';
            } else {
                if (this.style.visibility != 'visible') this.style.visibility = 'visible';
            }
        }
        if (!this.currentStyle || !this.currentStyle.hasLayout) this.style.zoom = 1;
        if (Browser.Engine.trident) this.style.filter = (opacity == 1) ? '' : 'alpha(opacity=' + opacity * 100 + ')';
        this.style.opacity = opacity;
        this.store('opacity', opacity);
    },

    get: function() {
        return this.retrieve('opacity', 1);
    }

};

Element.implement({

    setOpacity: function(value) {
        return this.set('opacity', value, true);
    },

    getOpacity: function() {
        return this.get('opacity');
    },

    setStyle: function(property, value) {
        switch (property) {
            case 'opacity': return this.set('opacity', parseFloat(value));
            case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
        }
        property = property.camelCase();
        if ($type(value) != 'string') {
            var map = (Element.Styles.get(property) || '@').split(' ');
            value = $splat(value).map(function(val, i) {
                if (!map[i]) return '';
                return ($type(val) == 'number') ? map[i].replace('@', Math.round(val)) : val;
            }).join(' ');
        } else if (value == String(Number(value))) {
            value = Math.round(value);
        }
        this.style[property] = value;
        return this;
    },

    getStyle: function(property) {
        switch (property) {
            case 'opacity': return this.get('opacity');
            case 'float': property = (Browser.Engine.trident) ? 'styleFloat' : 'cssFloat';
        }
        property = property.camelCase();
        var result = this.style[property];
        if (!$chk(result)) {
            result = [];
            for (var style in Element.ShortStyles) {
                if (property != style) continue;
                for (var s in Element.ShortStyles[style]) result.push(this.getStyle(s));
                return result.join(' ');
            }
            result = this.getComputedStyle(property);
        }
        if (result) {
            result = String(result);
            var color = result.match(/rgba?\([\d\s,]+\)/);
            if (color) result = result.replace(color[0], color[0].rgbToHex());
        }
        if (Browser.Engine.presto || (Browser.Engine.trident && !$chk(parseInt(result, 10)))) {
            if (property.test(/^(height|width)$/)) {
                var values = (property == 'width') ? ['left', 'right'] : ['top', 'bottom'], size = 0;
                values.each(function(value) {
                    size += this.getStyle('border-' + value + '-width').toInt() + this.getStyle('padding-' + value).toInt();
                }, this);
                return this['offset' + property.capitalize()] - size + 'px';
            }
            if ((Browser.Engine.presto) && String(result).test('px')) return result;
            if (property.test(/(border(.+)Width|margin|padding)/)) return '0px';
        }
        return result;
    },

    setStyles: function(styles) {
        for (var style in styles) this.setStyle(style, styles[style]);
        return this;
    },

    getStyles: function() {
        var result = {};
        Array.flatten(arguments).each(function(key) {
            result[key] = this.getStyle(key);
        }, this);
        return result;
    }

});

Element.Styles = new Hash({
    left: '@px', top: '@px', bottom: '@px', right: '@px',
    width: '@px', height: '@px', maxWidth: '@px', maxHeight: '@px', minWidth: '@px', minHeight: '@px',
    backgroundColor: 'rgb(@, @, @)', backgroundPosition: '@px @px', color: 'rgb(@, @, @)',
    fontSize: '@px', letterSpacing: '@px', lineHeight: '@px', clip: 'rect(@px @px @px @px)',
    margin: '@px @px @px @px', padding: '@px @px @px @px', border: '@px @ rgb(@, @, @) @px @ rgb(@, @, @) @px @ rgb(@, @, @)',
    borderWidth: '@px @px @px @px', borderStyle: '@ @ @ @', borderColor: 'rgb(@, @, @) rgb(@, @, @) rgb(@, @, @) rgb(@, @, @)',
    zIndex: '@', 'zoom': '@', fontWeight: '@', textIndent: '@px', opacity: '@'
});

Element.ShortStyles = { margin: {}, padding: {}, border: {}, borderWidth: {}, borderStyle: {}, borderColor: {} };

['Top', 'Right', 'Bottom', 'Left'].each(function(direction) {
    var Short = Element.ShortStyles;
    var All = Element.Styles;
    ['margin', 'padding'].each(function(style) {
        var sd = style + direction;
        Short[style][sd] = All[sd] = '@px';
    });
    var bd = 'border' + direction;
    Short.border[bd] = All[bd] = '@px @ rgb(@, @, @)';
    var bdw = bd + 'Width', bds = bd + 'Style', bdc = bd + 'Color';
    Short[bd] = {};
    Short.borderWidth[bdw] = Short[bd][bdw] = All[bdw] = '@px';
    Short.borderStyle[bds] = Short[bd][bds] = All[bds] = '@';
    Short.borderColor[bdc] = Short[bd][bdc] = All[bdc] = 'rgb(@, @, @)';
});


/*
---

name: Fx

description: Contains the basic animation logic to be extended by all other Fx Classes.

license: MIT-style license.

requires: [Chain, Events, Options]

provides: Fx

...
*/

var Fx = new Class({

    Implements: [Chain, Events, Options],

    options: {
        /*
        onStart: $empty,
        onCancel: $empty,
        onComplete: $empty,
        */
        fps: 50,
        unit: false,
        duration: 500,
        link: 'ignore'
    },

    initialize: function(options) {
        this.subject = this.subject || this;
        this.setOptions(options);
        this.options.duration = Fx.Durations[this.options.duration] || this.options.duration.toInt();
        var wait = this.options.wait;
        if (wait === false) this.options.link = 'cancel';
    },

    getTransition: function() {
        return function(p) {
            return -(Math.cos(Math.PI * p) - 1) / 2;
        };
    },

    step: function() {
        var time = $time();
        if (time < this.time + this.options.duration) {
            var delta = this.transition((time - this.time) / this.options.duration);
            this.set(this.compute(this.from, this.to, delta));
        } else {
            this.set(this.compute(this.from, this.to, 1));
            this.complete();
        }
    },

    set: function(now) {
        return now;
    },

    compute: function(from, to, delta) {
        return Fx.compute(from, to, delta);
    },

    check: function() {
        if (!this.timer) return true;
        switch (this.options.link) {
            case 'cancel': this.cancel(); return true;
            case 'chain': this.chain(this.caller.bind(this, arguments)); return false;
        }
        return false;
    },

    start: function(from, to) {
        if (!this.check(from, to)) return this;
        this.from = from;
        this.to = to;
        this.time = 0;
        this.transition = this.getTransition();
        this.startTimer();
        this.onStart();
        return this;
    },

    complete: function() {
        if (this.stopTimer()) this.onComplete();
        return this;
    },

    cancel: function() {
        if (this.stopTimer()) this.onCancel();
        return this;
    },

    onStart: function() {
        this.fireEvent('start', this.subject);
    },

    onComplete: function() {
        this.fireEvent('complete', this.subject);
        if (!this.callChain()) this.fireEvent('chainComplete', this.subject);
    },

    onCancel: function() {
        this.fireEvent('cancel', this.subject).clearChain();
    },

    pause: function() {
        this.stopTimer();
        return this;
    },

    resume: function() {
        this.startTimer();
        return this;
    },

    stopTimer: function() {
        if (!this.timer) return false;
        this.time = $time() - this.time;
        this.timer = $clear(this.timer);
        return true;
    },

    startTimer: function() {
        if (this.timer) return false;
        this.time = $time() - this.time;
        this.timer = this.step.periodical(Math.round(1000 / this.options.fps), this);
        return true;
    }

});

Fx.compute = function(from, to, delta) {
    return (to - from) * delta + from;
};

Fx.Durations = { 'short': 250, 'normal': 500, 'long': 1000 };


/*
---

name: Fx.CSS

description: Contains the CSS animation logic. Used by Fx.Tween, Fx.Morph, Fx.Elements.

license: MIT-style license.

requires: [Fx, Element.Style]

provides: Fx.CSS

...
*/

Fx.CSS = new Class({

    Extends: Fx,

    //prepares the base from/to object

    prepare: function(element, property, values) {
        values = $splat(values);
        var values1 = values[1];
        if (!$chk(values1)) {
            values[1] = values[0];
            values[0] = element.getStyle(property);
        }
        var parsed = values.map(this.parse);
        return { from: parsed[0], to: parsed[1] };
    },

    //parses a value into an array

    parse: function(value) {
        value = $lambda(value)();
        value = (typeof value == 'string') ? value.split(' ') : $splat(value);
        return value.map(function(val) {
            val = String(val);
            var found = false;
            Fx.CSS.Parsers.each(function(parser, key) {
                if (found) return;
                var parsed = parser.parse(val);
                if ($chk(parsed)) found = { value: parsed, parser: parser };
            });
            found = found || { value: val, parser: Fx.CSS.Parsers.String };
            return found;
        });
    },

    //computes by a from and to prepared objects, using their parsers.

    compute: function(from, to, delta) {
        var computed = [];
        (Math.min(from.length, to.length)).times(function(i) {
            computed.push({ value: from[i].parser.compute(from[i].value, to[i].value, delta), parser: from[i].parser });
        });
        computed.$family = { name: 'fx:css:value' };
        return computed;
    },

    //serves the value as settable

    serve: function(value, unit) {
        if ($type(value) != 'fx:css:value') value = this.parse(value);
        var returned = [];
        value.each(function(bit) {
            returned = returned.concat(bit.parser.serve(bit.value, unit));
        });
        return returned;
    },

    //renders the change to an element

    render: function(element, property, value, unit) {
        element.setStyle(property, this.serve(value, unit));
    },

    //searches inside the page css to find the values for a selector

    search: function(selector) {
        if (Fx.CSS.Cache[selector]) return Fx.CSS.Cache[selector];
        var to = {};
        Array.each(document.styleSheets, function(sheet, j) {
            var href = sheet.href;
            if (href && href.contains('://') && !href.contains(document.domain)) return;
            var rules = sheet.rules || sheet.cssRules;
            Array.each(rules, function(rule, i) {
                if (!rule.style) return;
                var selectorText = (rule.selectorText) ? rule.selectorText.replace(/^\w+/, function(m) {
                    return m.toLowerCase();
                }) : null;
                if (!selectorText || !selectorText.test('^' + selector + '$')) return;
                Element.Styles.each(function(value, style) {
                    if (!rule.style[style] || Element.ShortStyles[style]) return;
                    value = String(rule.style[style]);
                    to[style] = (value.test(/^rgb/)) ? value.rgbToHex() : value;
                });
            });
        });
        return Fx.CSS.Cache[selector] = to;
    }

});

Fx.CSS.Cache = {};

Fx.CSS.Parsers = new Hash({

    Color: {
        parse: function(value) {
            if (value.match(/^#[0-9a-f]{3,6}$/i)) return value.hexToRgb(true);
            return ((value = value.match(/(\d+),\s*(\d+),\s*(\d+)/))) ? [value[1], value[2], value[3]] : false;
        },
        compute: function(from, to, delta) {
            return from.map(function(value, i) {
                return Math.round(Fx.compute(from[i], to[i], delta));
            });
        },
        serve: function(value) {
            return value.map(Number);
        }
    },

    Number: {
        parse: parseFloat,
        compute: Fx.compute,
        serve: function(value, unit) {
            return (unit) ? value + unit : value;
        }
    },

    String: {
        parse: $lambda(false),
        compute: $arguments(1),
        serve: $arguments(0)
    }

});


/*
---

name: Fx.Morph

description: Formerly Fx.Styles, effect to transition any number of CSS properties for an element using an object of rules, or CSS based selector rules.

license: MIT-style license.

requires: Fx.CSS

provides: Fx.Morph

...
*/

Fx.Morph = new Class({

    Extends: Fx.CSS,

    initialize: function(element, options) {
        this.element = this.subject = document.byid(element);
        this.parent(options);
    },

    set: function(now) {
        if (typeof now == 'string') now = this.search(now);
        for (var p in now) this.render(this.element, p, now[p], this.options.unit);
        return this;
    },

    compute: function(from, to, delta) {
        var now = {};
        for (var p in from) now[p] = this.parent(from[p], to[p], delta);
        return now;
    },

    start: function(properties) {
        if (!this.check(properties)) return this;
        if (typeof properties == 'string') properties = this.search(properties);
        var from = {}, to = {};
        for (var p in properties) {
            var parsed = this.prepare(this.element, p, properties[p]);
            from[p] = parsed.from;
            to[p] = parsed.to;
        }
        return this.parent(from, to);
    }

});

Element.Properties.morph = {

    set: function(options) {
        var morph = this.retrieve('morph');
        if (morph) morph.cancel();
        return this.eliminate('morph').store('morph:options', $extend({ link: 'cancel' }, options));
    },

    get: function(options) {
        if (options || !this.retrieve('morph')) {
            if (options || !this.retrieve('morph:options')) this.set('morph', options);
            this.store('morph', new Fx.Morph(this, this.retrieve('morph:options')));
        }
        return this.retrieve('morph');
    }

};

Element.implement({

    morph: function(props) {
        this.get('morph').start(props);
        return this;
    }

});


/*
---

name: Fx.Transitions

description: Contains a set of advanced transitions to be used with any of the Fx Classes.

license: MIT-style license.

credits: Easing Equations by Robert Penner, <http://www.robertpenner.com/easing/>, modified and optimized to be used with MooTools.

requires: Fx

provides: Fx.Transitions

...
*/

Fx.implement({

    getTransition: function() {
        var trans = this.options.transition || Fx.Transitions.Sine.easeInOut;
        if (typeof trans == 'string') {
            var data = trans.split(':');
            trans = Fx.Transitions;
            trans = trans[data[0]] || trans[data[0].capitalize()];
            if (data[1]) trans = trans['ease' + data[1].capitalize() + (data[2] ? data[2].capitalize() : '')];
        }
        return trans;
    }

});

Fx.Transition = function(transition, params) {
    params = $splat(params);
    return $extend(transition, {
        easeIn: function(pos) {
            return transition(pos, params);
        },
        easeOut: function(pos) {
            return 1 - transition(1 - pos, params);
        },
        easeInOut: function(pos) {
            return (pos <= 0.5) ? transition(2 * pos, params) / 2 : (2 - transition(2 * (1 - pos), params)) / 2;
        }
    });
};

Fx.Transitions = new Hash({

    linear: $arguments(0)

});

Fx.Transitions.extend = function(transitions) {
    for (var transition in transitions) Fx.Transitions[transition] = new Fx.Transition(transitions[transition]);
};

Fx.Transitions.extend({

    Pow: function(p, x) {
        return Math.pow(p, x[0] || 6);
    },

    Expo: function(p) {
        return Math.pow(2, 8 * (p - 1));
    },

    Circ: function(p) {
        return 1 - Math.sin(Math.acos(p));
    },

    Sine: function(p) {
        return 1 - Math.sin((1 - p) * Math.PI / 2);
    },

    Back: function(p, x) {
        x = x[0] || 1.618;
        return Math.pow(p, 2) * ((x + 1) * p - x);
    },

    Bounce: function(p) {
        var value;
        for (var a = 0, b = 1; 1; a += b, b /= 2) {
            if (p >= (7 - 4 * a) / 11) {
                value = b * b - Math.pow((11 - 6 * a - 11 * p) / 4, 2);
                break;
            }
        }
        return value;
    },

    Elastic: function(p, x) {
        return Math.pow(2, 10 * --p) * Math.cos(20 * p * Math.PI * (x[0] || 1) / 3);
    }

});

['Quad', 'Cubic', 'Quart', 'Quint'].each(function(transition, i) {
    Fx.Transitions[transition] = new Fx.Transition(function(p) {
        return Math.pow(p, [i + 2]);
    });
});


/*
---

name: Fx.Tween

description: Formerly Fx.Style, effect to transition any CSS property for an element.

license: MIT-style license.

requires: Fx.CSS

provides: [Fx.Tween, Element.fade, Element.highlight]

...
*/

Fx.Tween = new Class({

    Extends: Fx.CSS,

    initialize: function(element, options) {
        this.element = this.subject = document.byid(element);
        this.parent(options);
    },

    set: function(property, now) {
        if (arguments.length == 1) {
            now = property;
            property = this.property || this.options.property;
        }
        this.render(this.element, property, now, this.options.unit);
        return this;
    },

    start: function(property, from, to) {
        if (!this.check(property, from, to)) return this;
        var args = Array.flatten(arguments);
        this.property = this.options.property || args.shift();
        var parsed = this.prepare(this.element, this.property, args);
        return this.parent(parsed.from, parsed.to);
    }

});

Element.Properties.tween = {

    set: function(options) {
        var tween = this.retrieve('tween');
        if (tween) tween.cancel();
        return this.eliminate('tween').store('tween:options', $extend({ link: 'cancel' }, options));
    },

    get: function(options) {
        if (options || !this.retrieve('tween')) {
            if (options || !this.retrieve('tween:options')) this.set('tween', options);
            this.store('tween', new Fx.Tween(this, this.retrieve('tween:options')));
        }
        return this.retrieve('tween');
    }

};

Element.implement({

    tween: function(property, from, to) {
        this.get('tween').start(arguments);
        return this;
    },

    fade: function(how) {
        var fade = this.get('tween'), o = 'opacity', toggle;
        how = $pick(how, 'toggle');
        switch (how) {
            case 'in': fade.start(o, 1); break;
            case 'out': fade.start(o, 0); break;
            case 'show': fade.set(o, 1); break;
            case 'hide': fade.set(o, 0); break;
            case 'toggle':
                var flag = this.retrieve('fade:flag', this.get('opacity') == 1);
                fade.start(o, (flag) ? 0 : 1);
                this.store('fade:flag', !flag);
                toggle = true;
                break;
            default: fade.start(o, arguments);
        }
        if (!toggle) this.eliminate('fade:flag');
        return this;
    },

    highlight: function(start, end) {
        if (!end) {
            end = this.retrieve('highlight:original', this.getStyle('background-color'));
            end = (end == 'transparent') ? '#fff' : end;
        }
        var tween = this.get('tween');
        tween.start('background-color', start || '#ffff88', end).chain(function() {
            this.setStyle('background-color', this.retrieve('highlight:original'));
            tween.callChain();
        } .bind(this));
        return this;
    }

});


/*
---

name: Request

description: Powerful all purpose Request Class. Uses XMLHTTPRequest.

license: MIT-style license.

requires: [Element, Chain, Events, Options, Browser]

provides: Request

...
*/

var Request = new Class({

    Implements: [Chain, Events, Options],

    options: {/*
		onRequest: $empty,
		onComplete: $empty,
		onCancel: $empty,
		onSuccess: $empty,
		onFailure: $empty,
		onException: $empty,*/
        url: '',
        data: '',
        headers: {
            'X-Requested-With': 'XMLHttpRequest',
            'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
        },
        async: true,
        format: false,
        method: 'post',
        link: 'ignore',
        isSuccess: null,
        emulation: true,
        urlEncoded: true,
        encoding: 'utf-8',
        evalScripts: false,
        evalResponse: false,
        noCache: false
    },

    initialize: function(options) {
        this.xhr = new Browser.Request();
        this.setOptions(options);
        this.options.isSuccess = this.options.isSuccess || this.isSuccess;
        this.headers = new Hash(this.options.headers);
    },

    onStateChange: function() {
        if (this.xhr.readyState != 4 || !this.running) return;
        this.running = false;
        this.status = 0;
        $try(function() {
            this.status = this.xhr.status;
        } .bind(this));
        this.xhr.onreadystatechange = $empty;
        if (this.options.isSuccess.call(this, this.status)) {
            this.response = { text: this.xhr.responseText, xml: this.xhr.responseXML };
            this.success(this.response.text, this.response.xml);
        } else {
            this.response = { text: null, xml: null };
            this.failure();
        }
    },

    isSuccess: function() {
        return ((this.status >= 200) && (this.status < 300));
    },

    processScripts: function(text) {
        if (this.options.evalResponse || (/(ecma|java)script/).test(this.getHeader('Content-type'))) return $exec(text);
        return text.stripScripts(this.options.evalScripts);
    },

    success: function(text, xml) {
        this.onSuccess(this.processScripts(text), xml);
    },

    onSuccess: function() {
        this.fireEvent('complete', arguments).fireEvent('success', arguments).callChain();
    },

    failure: function() {
        this.onFailure();
    },

    onFailure: function() {
        this.fireEvent('complete').fireEvent('failure', this.xhr);
    },

    setHeader: function(name, value) {
        this.headers.set(name, value);
        return this;
    },

    getHeader: function(name) {
        return $try(function() {
            return this.xhr.getResponseHeader(name);
        } .bind(this));
    },

    check: function() {
        if (!this.running) return true;
        switch (this.options.link) {
            case 'cancel': this.cancel(); return true;
            case 'chain': this.chain(this.caller.bind(this, arguments)); return false;
        }
        return false;
    },

    send: function(options) {
        if (!this.check(options)) return this;
        this.running = true;

        var type = $type(options);
        if (type == 'string' || type == 'element') options = { data: options };

        var old = this.options;
        options = $extend({ data: old.data, url: old.url, method: old.method }, options);
        var data = options.data, url = String(options.url), method = options.method.toLowerCase();

        switch ($type(data)) {
            case 'element': data = document.byid(data).toQueryString(); break;
            case 'object': case 'hash': data = Hash.toQueryString(data);
        }

        if (this.options.format) {
            var format = 'format=' + this.options.format;
            data = (data) ? format + '&' + data : format;
        }

        if (this.options.emulation && !['get', 'post'].contains(method)) {
            var _method = '_method=' + method;
            data = (data) ? _method + '&' + data : _method;
            method = 'post';
        }

        if (this.options.urlEncoded && method == 'post') {
            var encoding = (this.options.encoding) ? '; charset=' + this.options.encoding : '';
            this.headers.set('Content-type', 'application/x-www-form-urlencoded' + encoding);
        }

        if (this.options.noCache) {
            var noCache = 'noCache=' + new Date().getTime();
            data = (data) ? noCache + '&' + data : noCache;
        }

        var trimPosition = url.lastIndexOf('/');
        if (trimPosition > -1 && (trimPosition = url.indexOf('#')) > -1) url = url.substr(0, trimPosition);

        if (data && method == 'get') {
            url = url + (url.contains('?') ? '&' : '?') + data;
            data = null;
        }

        this.xhr.open(method.toUpperCase(), url, this.options.async);

        this.xhr.onreadystatechange = this.onStateChange.bind(this);

        this.headers.each(function(value, key) {
            try {
                this.xhr.setRequestHeader(key, value);
            } catch (e) {
                this.fireEvent('exception', [key, value]);
            }
        }, this);

        this.fireEvent('request');
        this.xhr.send(data);
        if (!this.options.async) this.onStateChange();
        return this;
    },

    cancel: function() {
        if (!this.running) return this;
        this.running = false;
        this.xhr.abort();
        this.xhr.onreadystatechange = $empty;
        this.xhr = new Browser.Request();
        this.fireEvent('cancel');
        return this;
    }

});

(function() {

    var methods = {};
    ['get', 'post', 'put', 'delete', 'GET', 'POST', 'PUT', 'DELETE'].each(function(method) {
        methods[method] = function() {
            var params = Array.link(arguments, { url: String.type, data: $defined });
            return this.send($extend(params, { method: method }));
        };
    });

    Request.implement(methods);

})();

Element.Properties.send = {

    set: function(options) {
        var send = this.retrieve('send');
        if (send) send.cancel();
        return this.eliminate('send').store('send:options', $extend({
            data: this, link: 'cancel', method: this.get('method') || 'post', url: this.get('action')
        }, options));
    },

    get: function(options) {
        if (options || !this.retrieve('send')) {
            if (options || !this.retrieve('send:options')) this.set('send', options);
            this.store('send', new Request(this.retrieve('send:options')));
        }
        return this.retrieve('send');
    }

};

Element.implement({

    send: function(url) {
        var sender = this.get('send');
        sender.send({ data: this, url: url || sender.options.url });
        return this;
    }

});


/*
---

name: Request.HTML

description: Extends the basic Request Class with additional methods for interacting with HTML responses.

license: MIT-style license.

requires: [Request, Element]

provides: Request.HTML

...
*/

Request.HTML = new Class({

    Extends: Request,

    options: {
        update: false,
        append: false,
        evalScripts: true,
        filter: false
    },

    processHTML: function(text) {
        var match = text.match(/<body[^>]*>([\s\S]*?)<\/body>/i);
        text = (match) ? match[1] : text;

        var container = new Element('div');

        return $try(function() {
            var root = '<root>' + text + '</root>', doc;
            if (Browser.Engine.trident) {
                doc = new ActiveXObject('Microsoft.XMLDOM');
                doc.async = false;
                doc.loadXML(root);
            } else {
                doc = new DOMParser().parseFromString(root, 'text/xml');
            }
            root = doc.getElementsByTagName('root')[0];
            if (!root) return null;
            for (var i = 0, k = root.childNodes.length; i < k; i++) {
                var child = Element.clone(root.childNodes[i], true, true);
                if (child) container.grab(child);
            }
            return container;
        }) || container.set('html', text);
    },

    success: function(text) {
        var options = this.options, response = this.response;

        response.html = text.stripScripts(function(script) {
            response.javascript = script;
        });

        var temp = this.processHTML(response.html);

        response.tree = temp.childNodes;
        response.elements = temp.getElements('*');

        if (options.filter) response.tree = response.elements.filter(options.filter);
        if (options.update) document.byid(options.update).empty().set('html', response.html);
        else if (options.append) document.byid(options.append).adopt(temp.getChildren());
        if (options.evalScripts) $exec(response.javascript);

        this.onSuccess(response.tree, response.elements, response.html, response.javascript);
    }

});

Element.Properties.load = {

    set: function(options) {
        var load = this.retrieve('load');
        if (load) load.cancel();
        return this.eliminate('load').store('load:options', $extend({ data: this, link: 'cancel', update: this, method: 'get' }, options));
    },

    get: function(options) {
        if (options || !this.retrieve('load')) {
            if (options || !this.retrieve('load:options')) this.set('load', options);
            this.store('load', new Request.HTML(this.retrieve('load:options')));
        }
        return this.retrieve('load');
    }

};

Element.implement({

    load: function() {
        this.get('load').send(Array.link(arguments, { data: Object.type, url: String.type }));
        return this;
    }

});


/*
---

name: JSON

description: JSON encoder and decoder.

license: MIT-style license.

see: <http://www.json.org/>

requires: [Array, String, Number, Function, Hash]

provides: JSON

...
*/

var JSON = new Hash(this.JSON && {
    stringify: JSON.stringify,
    parse: JSON.parse
}).extend({

    $specialChars: { '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '"': '\\"', '\\': '\\\\' },

    $replaceChars: function(chr) {
        return JSON.$specialChars[chr] || '\\u00' + Math.floor(chr.charCodeAt() / 16).toString(16) + (chr.charCodeAt() % 16).toString(16);
    },

    encode: function(obj) {
        switch ($type(obj)) {
            case 'string':
                return '"' + obj.replace(/[\x00-\x1f\\"]/g, JSON.$replaceChars) + '"';
            case 'array':
                return '[' + String(obj.map(JSON.encode).clean()) + ']';
            case 'object': case 'hash':
                var string = [];
                Hash.each(obj, function(value, key) {
                    var json = JSON.encode(value);
                    if (json) string.push(JSON.encode(key) + ':' + json);
                });
                return '{' + string + '}';
            case 'number': case 'boolean': return String(obj);
            case false: return 'null';
        }
        return null;
    },

    decode: function(string, secure) {
        if ($type(string) != 'string' || !string.length) return null;
        if (secure && !(/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(string.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, ''))) return null;
        return eval('(' + string + ')');
    }

});


/*
---

name: Request.JSON

description: Extends the basic Request Class with additional methods for sending and receiving JSON data.

license: MIT-style license.

requires: [Request, JSON]

provides: [Request.JSON]

...
*/

Request.JSON = new Class({

    Extends: Request,

    options: {
        secure: true
    },

    initialize: function(options) {
        this.parent(options);
        this.headers.extend({ 'Accept': 'application/json', 'X-Request': 'JSON' });
    },

    success: function(text) {
        this.response.json = JSON.decode(text, this.options.secure);
        this.onSuccess(this.response.json, text);
    }

});


/*
---

name: Cookie

description: Class for creating, reading, and deleting browser Cookies.

license: MIT-style license.

credits: Based on the functions by Peter-Paul Koch (http://quirksmode.org).

requires: Options

provides: Cookie

...
*/

var Cookie = new Class({

    Implements: Options,

    options: {
        path: false,
        domain: false,
        duration: false,
        secure: false,
        document: document
    },

    initialize: function(key, options) {
        this.key = key;
        this.setOptions(options);
    },

    write: function(value) {
        value = encodeURIComponent(value);
        if (this.options.domain) value += '; domain=' + this.options.domain;
        if (this.options.path) value += '; path=' + this.options.path;
        if (this.options.duration) {
            var date = new Date();
            date.setTime(date.getTime() + this.options.duration * 24 * 60 * 60 * 1000);
            value += '; expires=' + date.toGMTString();
        }
        if (this.options.secure) value += '; secure';
        this.options.document.cookie = this.key + '=' + value;
        return this;
    },

    read: function() {
        var value = this.options.document.cookie.match('(?:^|;)\\s*' + this.key.escapeRegExp() + '=([^;]*)');
        return (value) ? decodeURIComponent(value[1]) : null;
    },

    dispose: function() {
        new Cookie(this.key, $merge(this.options, { duration: -1 })).write('');
        return this;
    }

});

Cookie.write = function(key, value, options) {
    return new Cookie(key, options).write(value);
};

Cookie.read = function(key) {
    return new Cookie(key).read();
};

Cookie.dispose = function(key, options) {
    return new Cookie(key, options).dispose();
};


/*
---

name: DomReady

description: Contains the custom event domready.

license: MIT-style license.

requires: Element.Event

provides: DomReady

...
*/

Element.Events.domready = {

    onAdd: function(fn) {
        if (Browser.loaded) fn.call(this);
    }

};

(function() {

    var domready = function() {
        if (Browser.loaded) return;
        Browser.loaded = true;
        window.fireEvent('domready');
        document.fireEvent('domready');
    };

    window.addEvent('load', domready);

    if (Browser.Engine.trident) {
        var temp = document.createElement('div');
        (function() {
            ($try(function() {
                temp.doScroll(); // Technique by Diego Perini
                return document.byid(temp).inject(document.body).set('html', 'temp').dispose();
            })) ? domready() : arguments.callee.delay(50);
        })();
    } else if (Browser.Engine.webkit && Browser.Engine.version < 525) {
        (function() {
            (['loaded', 'complete'].contains(document.readyState)) ? domready() : arguments.callee.delay(50);
        })();
    } else {
        document.addEvent('DOMContentLoaded', domready);
    }

})();


/*
---

name: Selectors

description: Adds advanced CSS-style querying capabilities for targeting HTML Elements. Includes pseudo selectors.

license: MIT-style license.

requires: Element

provides: Selectors

...
*/

Native.implement([Document, Element], {

    getElements: function(expression, nocash) {
        expression = expression.split(',');
        var items, local = {};
        for (var i = 0, l = expression.length; i < l; i++) {
            var selector = expression[i], elements = Selectors.Utils.search(this, selector, local);
            if (i != 0 && elements.item) elements = $A(elements);
            items = (i == 0) ? elements : (items.item) ? $A(items).concat(elements) : items.concat(elements);
        }
        return new Elements(items, { ddup: (expression.length > 1), cash: !nocash });
    }

});

Element.implement({

    match: function(selector) {
        if (!selector || (selector == this)) return true;
        var tagid = Selectors.Utils.parseTagAndID(selector);
        var tag = tagid[0], id = tagid[1];
        if (!Selectors.Filters.byID(this, id) || !Selectors.Filters.byTag(this, tag)) return false;
        var parsed = Selectors.Utils.parseSelector(selector);
        return (parsed) ? Selectors.Utils.filter(this, parsed, {}) : true;
    }

});

var Selectors = { Cache: { nth: {}, parsed: {}} };

Selectors.RegExps = {
    id: (/#([\w-]+)/),
    tag: (/^(\w+|\*)/),
    quick: (/^(\w+|\*)$/),
    splitter: (/\s*([+>~\s])\s*([a-zA-Z#.*:\[])/g),
    combined: (/\.([\w-]+)|\[(\w+)(?:([!*^$~|]?=)(["']?)([^\4]*?)\4)?\]|:([\w-]+)(?:\(["']?(.*?)?["']?\)|$)/g)
};

Selectors.Utils = {

    chk: function(item, uniques) {
        if (!uniques) return true;
        var uid = $uid(item);
        if (!uniques[uid]) return uniques[uid] = true;
        return false;
    },

    parseNthArgument: function(argument) {
        if (Selectors.Cache.nth[argument]) return Selectors.Cache.nth[argument];
        var parsed = argument.match(/^([+-]?\d*)?([a-z]+)?([+-]?\d*)?$/);
        if (!parsed) return false;
        var inta = parseInt(parsed[1], 10);
        var a = (inta || inta === 0) ? inta : 1;
        var special = parsed[2] || false;
        var b = parseInt(parsed[3], 10) || 0;
        if (a != 0) {
            b--;
            while (b < 1) b += a;
            while (b >= a) b -= a;
        } else {
            a = b;
            special = 'index';
        }
        switch (special) {
            case 'n': parsed = { a: a, b: b, special: 'n' }; break;
            case 'odd': parsed = { a: 2, b: 0, special: 'n' }; break;
            case 'even': parsed = { a: 2, b: 1, special: 'n' }; break;
            case 'first': parsed = { a: 0, special: 'index' }; break;
            case 'last': parsed = { special: 'last-child' }; break;
            case 'only': parsed = { special: 'only-child' }; break;
            default: parsed = { a: (a - 1), special: 'index' };
        }

        return Selectors.Cache.nth[argument] = parsed;
    },

    parseSelector: function(selector) {
        if (Selectors.Cache.parsed[selector]) return Selectors.Cache.parsed[selector];
        var m, parsed = { classes: [], pseudos: [], attributes: [] };
        while ((m = Selectors.RegExps.combined.exec(selector))) {
            var cn = m[1], an = m[2], ao = m[3], av = m[5], pn = m[6], pa = m[7];
            if (cn) {
                parsed.classes.push(cn);
            } else if (pn) {
                var parser = Selectors.Pseudo.get(pn);
                if (parser) parsed.pseudos.push({ parser: parser, argument: pa });
                else parsed.attributes.push({ name: pn, operator: '=', value: pa });
            } else if (an) {
                parsed.attributes.push({ name: an, operator: ao, value: av });
            }
        }
        if (!parsed.classes.length) delete parsed.classes;
        if (!parsed.attributes.length) delete parsed.attributes;
        if (!parsed.pseudos.length) delete parsed.pseudos;
        if (!parsed.classes && !parsed.attributes && !parsed.pseudos) parsed = null;
        return Selectors.Cache.parsed[selector] = parsed;
    },

    parseTagAndID: function(selector) {
        var tag = selector.match(Selectors.RegExps.tag);
        var id = selector.match(Selectors.RegExps.id);
        return [(tag) ? tag[1] : '*', (id) ? id[1] : false];
    },

    filter: function(item, parsed, local) {
        var i;
        if (parsed.classes) {
            for (i = parsed.classes.length; i--; i) {
                var cn = parsed.classes[i];
                if (!Selectors.Filters.byClass(item, cn)) return false;
            }
        }
        if (parsed.attributes) {
            for (i = parsed.attributes.length; i--; i) {
                var att = parsed.attributes[i];
                if (!Selectors.Filters.byAttribute(item, att.name, att.operator, att.value)) return false;
            }
        }
        if (parsed.pseudos) {
            for (i = parsed.pseudos.length; i--; i) {
                var psd = parsed.pseudos[i];
                if (!Selectors.Filters.byPseudo(item, psd.parser, psd.argument, local)) return false;
            }
        }
        return true;
    },

    getByTagAndID: function(ctx, tag, id) {
        if (id) {
            var item = (ctx.getElementById) ? ctx.getElementById(id, true) : Element.getElementById(ctx, id, true);
            return (item && Selectors.Filters.byTag(item, tag)) ? [item] : [];
        } else {
            return ctx.getElementsByTagName(tag);
        }
    },

    search: function(self, expression, local) {
        var splitters = [];

        var selectors = expression.trim().replace(Selectors.RegExps.splitter, function(m0, m1, m2) {
            splitters.push(m1);
            return ':)' + m2;
        }).split(':)');

        var items, filtered, item;

        for (var i = 0, l = selectors.length; i < l; i++) {

            var selector = selectors[i];

            if (i == 0 && Selectors.RegExps.quick.test(selector)) {
                items = self.getElementsByTagName(selector);
                continue;
            }

            var splitter = splitters[i - 1];

            var tagid = Selectors.Utils.parseTagAndID(selector);
            var tag = tagid[0], id = tagid[1];

            if (i == 0) {
                items = Selectors.Utils.getByTagAndID(self, tag, id);
            } else {
                var uniques = {}, found = [];
                for (var j = 0, k = items.length; j < k; j++) found = Selectors.Getters[splitter](found, items[j], tag, id, uniques);
                items = found;
            }

            var parsed = Selectors.Utils.parseSelector(selector);

            if (parsed) {
                filtered = [];
                for (var m = 0, n = items.length; m < n; m++) {
                    item = items[m];
                    if (Selectors.Utils.filter(item, parsed, local)) filtered.push(item);
                }
                items = filtered;
            }

        }

        return items;

    }

};

Selectors.Getters = {

    ' ': function(found, self, tag, id, uniques) {
        var items = Selectors.Utils.getByTagAndID(self, tag, id);
        for (var i = 0, l = items.length; i < l; i++) {
            var item = items[i];
            if (Selectors.Utils.chk(item, uniques)) found.push(item);
        }
        return found;
    },

    '>': function(found, self, tag, id, uniques) {
        var children = Selectors.Utils.getByTagAndID(self, tag, id);
        for (var i = 0, l = children.length; i < l; i++) {
            var child = children[i];
            if (child.parentNode == self && Selectors.Utils.chk(child, uniques)) found.push(child);
        }
        return found;
    },

    '+': function(found, self, tag, id, uniques) {
        while ((self = self.nextSibling)) {
            if (self.nodeType == 1) {
                if (Selectors.Utils.chk(self, uniques) && Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
                break;
            }
        }
        return found;
    },

    '~': function(found, self, tag, id, uniques) {
        while ((self = self.nextSibling)) {
            if (self.nodeType == 1) {
                if (!Selectors.Utils.chk(self, uniques)) break;
                if (Selectors.Filters.byTag(self, tag) && Selectors.Filters.byID(self, id)) found.push(self);
            }
        }
        return found;
    }

};

Selectors.Filters = {

    byTag: function(self, tag) {
        return (tag == '*' || (self.tagName && self.tagName.toLowerCase() == tag));
    },

    byID: function(self, id) {
        return (!id || (self.id && self.id == id));
    },

    byClass: function(self, klass) {
        return (self.className && self.className.contains && self.className.contains(klass, ' '));
    },

    byPseudo: function(self, parser, argument, local) {
        return parser.call(self, argument, local);
    },

    byAttribute: function(self, name, operator, value) {
        var result = Element.prototype.getProperty.call(self, name);
        if (!result) return (operator == '!=');
        if (!operator || value == undefined) return true;
        switch (operator) {
            case '=': return (result == value);
            case '*=': return (result.contains(value));
            case '^=': return (result.substr(0, value.length) == value);
            case '$=': return (result.substr(result.length - value.length) == value);
            case '!=': return (result != value);
            case '~=': return result.contains(value, ' ');
            case '|=': return result.contains(value, '-');
        }
        return false;
    }

};

Selectors.Pseudo = new Hash({

    // w3c pseudo selectors

    checked: function() {
        return this.checked;
    },

    empty: function() {
        return !(this.innerText || this.textContent || '').length;
    },

    not: function(selector) {
        return !Element.match(this, selector);
    },

    contains: function(text) {
        return (this.innerText || this.textContent || '').contains(text);
    },

    'first-child': function() {
        return Selectors.Pseudo.index.call(this, 0);
    },

    'last-child': function() {
        var element = this;
        while ((element = element.nextSibling)) {
            if (element.nodeType == 1) return false;
        }
        return true;
    },

    'only-child': function() {
        var prev = this;
        while ((prev = prev.previousSibling)) {
            if (prev.nodeType == 1) return false;
        }
        var next = this;
        while ((next = next.nextSibling)) {
            if (next.nodeType == 1) return false;
        }
        return true;
    },

    'nth-child': function(argument, local) {
        argument = (argument == undefined) ? 'n' : argument;
        var parsed = Selectors.Utils.parseNthArgument(argument);
        if (parsed.special != 'n') return Selectors.Pseudo[parsed.special].call(this, parsed.a, local);
        var count = 0;
        local.positions = local.positions || {};
        var uid = $uid(this);
        if (!local.positions[uid]) {
            var self = this;
            while ((self = self.previousSibling)) {
                if (self.nodeType != 1) continue;
                count++;
                var position = local.positions[$uid(self)];
                if (position != undefined) {
                    count = position + count;
                    break;
                }
            }
            local.positions[uid] = count;
        }
        return (local.positions[uid] % parsed.a == parsed.b);
    },

    // custom pseudo selectors

    index: function(index) {
        var element = this, count = 0;
        while ((element = element.previousSibling)) {
            if (element.nodeType == 1 && ++count > index) return false;
        }
        return (count == index);
    },

    even: function(argument, local) {
        return Selectors.Pseudo['nth-child'].call(this, '2n+1', local);
    },

    odd: function(argument, local) {
        return Selectors.Pseudo['nth-child'].call(this, '2n', local);
    },

    selected: function() {
        return this.selected;
    },

    enabled: function() {
        return (this.disabled === false);
    }

});


/*
---

name: Swiff

description: Wrapper for embedding SWF movies. Supports External Interface Communication.

license: MIT-style license.

credits: Flash detection & Internet Explorer + Flash Player 9 fix inspired by SWFObject.

requires: [Options, $util]

provides: Swiff

...
*/

var Swiff = new Class({

    Implements: [Options],

    options: {
        id: null,
        height: 1,
        width: 1,
        container: null,
        properties: {},
        params: {
            quality: 'high',
            allowScriptAccess: 'always',
            wMode: 'transparent',
            swLiveConnect: true
        },
        callBacks: {},
        vars: {}
    },

    toElement: function() {
        return this.object;
    },

    initialize: function(path, options) {
        this.instance = 'Swiff_' + $time();

        this.setOptions(options);
        options = this.options;
        var id = this.id = options.id || this.instance;
        var container = document.byid(options.container);

        Swiff.CallBacks[this.instance] = {};

        var params = options.params, vars = options.vars, callBacks = options.callBacks;
        var properties = $extend({ height: options.height, width: options.width }, options.properties);

        var self = this;

        for (var callBack in callBacks) {
            Swiff.CallBacks[this.instance][callBack] = (function(option) {
                return function() {
                    return option.apply(self.object, arguments);
                };
            })(callBacks[callBack]);
            vars[callBack] = 'Swiff.CallBacks.' + this.instance + '.' + callBack;
        }

        params.flashVars = Hash.toQueryString(vars);
        if (Browser.Engine.trident) {
            properties.classid = 'clsid:D27CDB6E-AE6D-11cf-96B8-444553540000';
            params.movie = path;
        } else {
            properties.type = 'application/x-shockwave-flash';
            properties.data = path;
        }
        var build = '<object id="' + id + '"';
        for (var property in properties) build += ' ' + property + '="' + properties[property] + '"';
        build += '>';
        for (var param in params) {
            if (params[param]) build += '<param name="' + param + '" value="' + params[param] + '" />';
        }
        build += '</object>';
        this.object = ((container) ? container.empty() : new Element('div')).set('html', build).firstChild;
    },

    replaces: function(element) {
        element = document.byid(element, true);
        element.parentNode.replaceChild(this.toElement(), element);
        return this;
    },

    inject: function(element) {
        document.byid(element, true).appendChild(this.toElement());
        return this;
    },

    remote: function() {
        return Swiff.remote.apply(Swiff, [this.toElement()].extend(arguments));
    }

});

Swiff.CallBacks = {};

Swiff.remote = function(obj, fn) {
    var rs = obj.CallFunction('<invoke name="' + fn + '" returntype="javascript">' + __flash__argumentsToXML(arguments, 2) + '</invoke>');
    return eval(rs);
};

